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[Guide/tutorial] Asus Transformer Prime/TF201 stock to Android 7.1 Nougat

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By djibe89, Senior Member on 23rd October 2016, 06:23 PM
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[Guide] Asus Transformer Prime to Android 7.1/LineageOS 14.1
[Guide/tutorial] Asus Transformer Prime/TF201 stock to Android 7.1 Nougat/LineageOS 14.1

This detailed step-by-step guide helps you transform your Asus Transformer Prime with Android 4.1.1 to a powerful one with Android 7.1 (Nougat).

### The Asus Transformer Prime codename is TF201.

Try to prefer USB2 connections, but USB3 works fine too.

CHANGELOG ---------------------------------------------------------
v8. ROM v35 and enhenced link for OpenGapps
v7. Refresh pack for ROM v32 and TWRP recovery 3.2.3-0
v6. Google Play certification
v5. Updated djibe pack for easier install (kang recovery 3.1.0-1, SuperSU, drivers if fails at Step 6) + switched to v26 of Katkiss
v4. TWRP Kang recovery 3.1.0-1
v3. Tweaks and walkthrough
v2. Android 7, many hints added for more accurate tutorial
v1. Initial release


BEFORE STARTING ----------------------------------------------------

Make sure you have the latest official updates for your tab :
In Android, go to Settings -> About tablet -> System Update

### Make sure you read all comments starting by ###

To make sure your tab is the correct model, go to Settings -> About tablet.
The details below are listed :

• Android 4.1.1 (JellyBean; Nvidia logo bottom right on boot)
bootloader V 10.4.2.18
### To verify bootloader version, shut down tab. Then hold Power + Volume- for 3 seconds and release.
### You are in bootloader : on top left corner is written Android (...) epad-10.4.2.18.
### To quit bootloader, press Volume- to go over the Android icon, then Volume+ to confirm.
### If not V 10.4.2.18, check official updates for your tab before starting this tutorial
### or check more info on Asus support web page and download the version identical to the Firmware Description written top left corner of the bootloader

• GPS 7.9.13
• Wi-Fi 7.1.0.24
• BT 10.33
• Camera FT201-0x9900
• Ecran MXT-2.0 build-170
• Kernel 3.1.10.00002-9599d0cf [email protected]
o #1 SMP PREEMPT Thui Nov 22:12:01 CST 2012
• Build nr JR003C.WW_epad-10.4.2.18-20121122

Still in Settings -> About tablet, tap 7 times on build number to unlock Developer menu.


0 - BACKUP YOUR DATA

Backup SMS, photos, contacts before going any further (ex: use the backupyourmobile app).
Check that backup is located on microSD card.
Then copy the backup on your PC.


1 - DOWNLOAD

djibe Transformer Prime pack v2 : http://bit.ly/djibeTransformerPrimev2
(contains Windows Universal Naked drivers + android_winusb if step 6 is difficult + Asus UnLock_Device_App_V6.apk + fastboot.exe + adb.exe + nvflash.exe + HairyBean Bootloader and various recoveries necessary + SuperSU 2.82).
Unzip the file on Windows desktop.

+ ROM KatKiss Nougat (v37b or later) Android 7.1
XDA Thread : https://forum.xda-developers.com/tra...t/rom-t3457417
Download here : https://forum.xda-developers.com/dev...t/dl/?id=31396

+ OpenGapps ARM 7.1 Pico (NO OTHER DISTRIB THAT PICO please) : https://opengapps.org/?api=7.1&variant=pico

You must have a microSD card (FAT32 format), copy the zip files from Katkiss ROM, OpenGapps and SuperSU.
Then insert it in the tab.


2 - INSTALL WINDOWS DRIVERS FOR ASUS TRANSFORMER PRIME TF201

- Windows 8/10 :
On keyboard, type combo : "Windows key + R"
In the command prompt, type :
Code:
shutdown -o -r -t 0
It opens Windows Recovery menu:
Go to Troubleshoot -> Advanced Options -> Startup settings -> Restart.

At reboot, hit 7 (Disable driver control) and follow instructions for Windows Vista/7.
Once driver installation is completed, reboot PC as usual.

- Windows Vista/Windows 7 :
Go to folder /Universal Naked Drivers 0.72 you unziped earlier (on Windows desktop).
Select file android_apxusb.inf, then right click -> Install.
Force driver installation and wait until a success message prompts.
Repeat operation with android_winusb.inf .
Then plug tablet to PC (USB2 port) to end driver installation.

### If it fails to install you may try using Windows device manager :
### In Windows Device Manager menu -> Right-click on Asus Android Device -> Update Driver Software -> Let me pick -> Have disk -> Browse to the .inf file and install BOTH .inf files.

### See this post if still doesn't work : https://forum.xda-developers.com/sho...&postcount=166


- Copy the UnLock_Device_App in tablet's internal memory
Tab should normaly be seen in Windows explorer as TF201.
Check MTP file transfer protocol is active on the tab.
Copy the UnLock_Device_App_V6.apk in the root folder of the tab.


3 - UNLOCK BOOTLOADER OF ASUS TF201
Tablet must be fully charged to 100 %.

In Android, go to Settings -> Security -> Check Unknown Sources.
Then Settings -> Developer options -> Enable USB debugging.

Launch the preinstalled app File Manager to install UnLock_Device_App_V6.apk.
### If it fails to install, delete your Google Account. Go to Settings -> Accounts. Delete the Google Account.

Launch the UnlockApp.
Accept User agreements. Your warranty is now void.
Accept and click to unlock the tab,
let the tab restart and work.
After reboot , "This device is unlocked" is written on top left screen.


4 - PREVENT BRICK : NVFlash

This step is optionnal but highly higly highly recommended, your tab will never be bricked after it !!!

1ST PART --------------------
Tab shut down, press Power + Volume- for 3 seconds and release, you are in the bootloader.
Use Volume- to move cursor over the USB logo, confirm with Volume+, you are in the fastboot mode.

Connect Transformer Prime to PC.

Select the "Files" folder you you unziped earlier.
Do Shift + right click on folder -> Open a Command Line.
Type:
Code:
fastboot -i 0x0b05 flash recovery flatline_tf201.img
and confirm with Enter.
### If you get error "fastboot : The term 'fastboot' is not recognized as the name of a cmdlet, function, script file, or operable program",
### type the command starting with a dot :
Code:
.\fastboot -i 0x0b05 flash recovery flatline_tf201.img
A blue bar appears on the tablet indicating flash success.
Wait until command line reports the flashing success.
then type :
Code:
fastboot reboot-bootloader
and confirm with Enter.
This time in Bootloader, use Volume- to select RCK (recovery) and confirm with Volume+.

You are in the flatline recovery.
Use Volume- to go to Advances, confirm with Power.
then wheelie, confirm (Power button),
then i accept the above statement (Power button),
then Step 1: flash AndroidRoot BL, tab powers down.
Start tab with Power only,
let the blue bar fill completly and start Android normally.
Once in Android, shut it down.

Start tab in bootloader Mode again (still Power + Volume- ), go to recovery again (RCK).
Connect tab to PC.
In recovery, return to Advanced -> wheelie then select Step 2: generate wheelie blobs.
It generates the backup files !!!

Open another Windows command prompt for fastboot mode and type :
Code:
adb pull /data/media/AndroidRoot
.
Backup files are stored in your "Files" folder. Make another backup of these files in a safe place.
(7 files are saved : recovery.bct, create.bct, bootloader.ebt, blob.log, blob.bin, pt_restore.log and pt_patch.log)
### If
Code:
adb pull /data/media/AndroidRoot
doesn't work : start Android normally, connect to PC as multimedia storage and
### navigate to My Computer -> Transformer Prime TF201 -> Internal Memory -> Android Root and copy the files in here.

Shut down tab.

2ND PART, NvFlash ----------------
Copy these 7 files in the folder "files/nvflash" (Another copy, in addition to the backup you made).
Connect tab to PC.
Start tab in Nvidia APX Mode : Hold Power + Volume+ for 3 seconds.
Anything happens, it's normal, screen stays black.
The tab is visible as an external drive and is called APX.

Open another Windows command prompt on the nvflash folder.
Type :
Code:
wheelie --blob blob.bin
and confirm with Enter.
If successful : the tab launches in bootloader mode and the Command prompt writes a few lines.

Type in command :
Code:
nvflash --resume --rawdeviceread 0 2944 bricksafe.img
then :
Code:
nvflash --resume --read 14 factory-config.img
then :
Code:
nvflash --resume --read 7 unlock-token.img
You have to backup 3 new files : bricksafe.img, factory-config.img and unlock-token.img.
Copy these files in a safe storage with your blobs for future repair if needed.

### If you need to restore those backups one day, follow the tutorial of craigacgomez : https://forum.xda-developers.com/sho....php?t=1927818


5 - RECOVERY

(Only applies to stock bootloader V 10.4.2.18).

Charge tab to 100% before continuing.
Start it in bootloader mode (Power + Volume-).
Connect it to PC.
Set the icon over the USB selection.
Confirm with Volume+; you are again in fastboot mode.

Open a command prompt on the /files folder.
Type :
Code:
fastboot devices
.
if the serial number is written, tab is well connected.
### Or check driver installation if not.

then type :
Code:
fastboot -i 0x0b05 flash recovery twrp_tf201t.blob
and wait for the "finished" success message,
then type :
Code:
fastboot -i 0x0b05 reboot-bootloader
,
and confirm with Volume+ to get into RCK (recovery, again), it is now TWRP 2.6.3.0.


6 - BOOTLOADER

Once in TWRP recovery, type in command prompt :
Code:
adb devices
-> terminal returns : 012345678ABCDEF recovery.
Type :
Code:
adb push HairyBean_Bootloader_TWRP2.5.zip /sdcard
Now on the tab, still in TWRP recovery, go to Install then click on HairyBean_Bootloader_TWRP2.5.zip
(file is in Internal memory, in folder /sdcard).
Swype to the right to confirm flashing, wait until Successful message appears.

Now click Reboot System and Do Not Install when SuperSU is proposed.
Let the tab reboot with another blue bar. Let it work.
The tab reboots and launches the HairyBean TWRP recovery (androwook).

In Windows command prompt, type :
Code:
adb reboot-bootloader
,
tab reboots in bootloader mode and the USB icon is gone, it's perfect.

### If Windows doesn't recognize your tab, or recognizes it as VID_0B05&PID_4C83, try the fix from XTCrefugee included in my pack : folder \Drivers android_winusb if hairybeen TWRP not recognized
### Install this .inf driver file as you did earlier

###
### YOUR BOOTLOADER IS NOW IN 10.6.1.27.1 VERSION
###

In command prompt, type :
Code:
fastboot -i 0x0b05 flash recovery twrp-3.2.3-0_KANG-tf201t.img
Wait till blue bar completes.
When finished message appears in terminal,
type :
Code:
fastboot -i 0x0b05 reboot-bootloader
, tab reboots.

Now enter in new recovery with Volume+ : recovery is now TWRP Kang 3.2.3-0 Recovery

### Your tablet will be seen by Windows as a TF201T now !


7 - SET FILESYSTEM TO F2FS

F2FS is the fastest filesystem for read and write partitions on flash memories. Compared to EXT4, gain is from 15 to 280 %.
No need to format the /System partition because it is Read only and Ext4 is still faster.

Go to Wipe -> Advanced Wipe, select only the Data partition,
then tap on Repair or Change File System -> Change File System and tap on F2FS.
Swype to force partition system as F2FS. Wait till done prompts. Then go back to Advanced Wipe.

### If TWRP sends you this log in red : E:Failed to get default contexts and file node for storage files,
### Reboot to TWRP recovery again before going any further.

Repeat the operation of F2FS conversion for the Cache partition.


8 - INSTALL Android Nougat 7.1

Still on TWRP Advanced Wipe menu,
select Dalvik Cache, System, Cache, Data AND Internal Storage and Swype to force cleanup. Wait till completion.

Back to Home screen, tap Install, then Storage: Internal Storage and change it to microSD card -> OK.
Select KatKiss* .zip, and Add More Zips,
select SuperSU.zip, and Add More Zips,
then open_gapps-arm-7.1-pico*.zip and Swype to force install. Be patient.

### Make sure once again you have the Pico Gapps version or system will hang.
### If TWRP crashes to its Home screen, you microSD might be in cause. Find another one, and then try to install Zips 1 by 1.
### If error installing Gapps, see this thread : https://forum.xda-developers.com/and...gapps-t3311779

When done prompts, tap on Wipe Cache/Dalvik and swype to confirm, wait.
Go back to Home when done.
Then Reboot -> System.
Let the tab start during at least 15 minutes.


9 - START ANDROID N 7.1

### During first setup, manually toggle Wifi ON using the Wifi icon on the bottom right corner. If you don't, the setup app will crash.
### It can crash a few times before turning on, keep activating it.

Configure Android as you like.

In Settings -> Mediascanner filters, uncheck Scan.
In Settings -> About, tap 7 times on build number, it unlocks the Options for developers in Settings.
Enter this new menu.
In the Hardware acceleration, try both GPU rendering active and disabled.
I can't figure which one works best. Share with us.

Good to know about this ROM:
Bluetooth requires to be turned on twice before it turns on.
A few things including the navbar buttons can be tweaked in Settings => System UI Tuner.
AND more on XDA Katkiss thread (See DOWNLOAD CHAPTER ABOVE)


10 - CALIBRATE BATTERY

In Google Play Store, download App Battery Calibration (from IMobS Ltd).
Launch the App.
Confirm root acces.
Plug tab and wait till charge hits 100%, then hit BATTERY CALIBRATION and unplug it.

Use GPS Status and Toolbox for faster GPS fix.


11 - ROOT

Open app SuperSU to see more details about the Root access.
After ROM first launch, go to Settings -> About tablet.
Tap 7 times on build number, it will unlock the Developer menu.

In the developer menu -> Try to turn ON and OFF the Force GPU option and tell me what is the faster one.
(I think I prefer when GPU forcing is disabled).


12 - PERFORMANCES AND OVERCLOCK

Source of benchmarks : http://androidmodguide.blogspot.fr/p/blog-page.html

Install Kernel Adiutor app from Google Play Store.
Launch app and go to Settings -> Kernel -> CPU :
Check Apply on boot and change CPU Maximum Frequency to 1600 or 1700 Mhz, set Governor to Interactive

Now Kernel -> I/O Scheduler :
Check Apply on boot and set Scheduler to Zen, then Readahead to 1024 Ko (or 2048. Try yourself)

Now Kernel -> Various :
Check Apply on boot and set TCP congestion to Cubic (or Westwood)


13 - Various fixes

### Your tablet doesn't see the Wifi ? (that is on Channel 13 by example).
Try this first : in the Wifi screen (where you see all visible networks), tap on the three-dots icon to open the menu -> Advanced wifi parameters.
Tap on the Wifi region code item to select the region : chose the corresponding region.
Now verify your Wifi network is visible.

If not, try this :
Open Kernel adiutor, Menu -> Build.prop editor.
In key search field, type wifi.
Click ro.wifi.channels -> Edit -> in the value field, set 13. Confirm with OK.
At the same time, you can set wifi.supplicant_scan_interval=180 to 180 (seconds) to reduce number of scans and reduce battery usage.
Restart tab, your wifi network should be visible again.

### Your keyboard isn't in the correct language
Go to Android Settings menu -> Languages & inputs -> Physical keyboard -> Android keyboard


14 - OBTAIN GOOGLE MOBILE SERVICES (GMS) CERTIFICATION
Google now restricts Google Play and Google apps access to certificated devices. Since you have a custom ROM, you are banned.
We now need to subscribe for the Google Play Certification.

Download the DeviceID app from the Play Store : https://play.google.com/store/apps/d...deviceid&hl=fr
### If you don't have access to the Play Store, in Android, go to Settings -> Security and activate the Unknow sources
### Now download DeviceID from here : https://www.apkmirror.com/apk/evozi/...load/download/

Install it, launch it.
Tap on the Google Service Framework (GSF) line, then tap on the COPY button.

In your Android webbrowser, go to : https://www.google.com/android/uncertified/
Connect to Google using your Google/Android account.
In the input field of the page, paste the 16 digits code.
Click on the Save button, a success message confirms your device is Certified.

Do I need to re-certify it ?
"Your device’s GSF ID is reset every time your device is factory reset (or when you wipe the GSF app itself) since it is stored in your data partition, so you must re-register your GSF ID every time you perform either of these actions."
More info here : https://lineageos.org/Google-Play-Certification/



Enjoy your new tab
djibe

Thanks : @timduru, matthill.eu, Kang for updated TWRP, TWRP team, Android Root Team, Lineage OS team, TacoNikky, Saber
The Following 17 Users Say Thank You to djibe89 For This Useful Post: [ View ] Gift djibe89 Ad-Free
23rd October 2016, 06:41 PM |#2  
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Thanks for the step-by-step. I've worked my way to nougat and the path there is kind of forgotten after a while. Different bootloader, different file systems, sort of lose track of things.

Sent from my XT1575 using Tapatalk
28th October 2016, 10:07 PM |#3  
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Quote:
Originally Posted by HorthLithperer

Thanks for the step-by-step. I've worked my way to nougat and the path there is kind of forgotten after a while. Different bootloader, different file systems, sort of lose track of things.

Sent from my XT1575 using Tapatalk

Thanks for your support. It was a tough job to explain step by step.
Took me 3 days to discover all the details.
The Following User Says Thank You to djibe89 For This Useful Post: [ View ] Gift djibe89 Ad-Free
19th December 2016, 08:55 AM |#4  
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thanks
really great work.

i want to add a comment : When trying to unlock bootloader, it kept on asking pw for google account (and double authentification disabled). I deleted google account from prime and it went through.
19th December 2016, 12:53 PM |#5  
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Quote:
Originally Posted by yo29570

really great work.

i want to add a comment : When trying to unlock bootloader, it kept on asking pw for google account (and double authentification disabled). I deleted google account from prime and it went through.

Thx for feedback.
I had the same problem and used the tab factory reset.
I've updated tutorial and told to delete the Google Account.
20th December 2016, 03:33 AM |#6  
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I just wanted to thank you for making these instructions. Ive never delt with any android device with this many steps. Compared to a nexus 6p this is nuts. Ive messed around with Motorola and Samsung phones but this tablet is a whole other league. You made it very simple to turn my daughters slow old tablet into a relevant one. I still cant believe there was that much to it. Its only 10 steps...lol
20th December 2016, 10:50 AM |#7  
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Quote:
Originally Posted by Woodrow256

I just wanted to thank you for making these instructions. Ive never delt with any android device with this many steps. Compared to a nexus 6p this is nuts. Ive messed around with Motorola and Samsung phones but this tablet is a whole other league. You made it very simple to turn my daughters slow old tablet into a relevant one. I still cant believe there was that much to it. Its only 10 steps...lol

Glad you liked it and tab is healthy again !
I've made tuts for Xperia Tablet Z and Samsung devices too if you are interested
22nd December 2016, 10:47 AM |#8  
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Problem with step 8 - INSTALL Android 6 ROM
Hello djibe89,
First of all, I would like to thank you very much for this well documented step-by-step guide for upgrading the TF201! It was no problem for me, a novice in this, to follow.

However i do have encountered a problem with booting after the installation of step 8. And i hope you are able to help me with this. When i try to boot the device after Successful installing KatKiss-6.0_TF201_029.zip, open_gapps-arm-6.0-pico-20160320.zip, and Beta-superSU-v2.52.zip, the device seems to be in a boot-loop. The OS never starts up.
I also tried the older KatKiss-6.0_TF201_028.zip with the two other zip files, but the result is the same.

Until step 8, all installations went without major problems. (i made a document from your instructions and documented every step i did, (including serial number received from fastboot etc). So my TF201 is now Unlocked and the bootloader TWRP is at version 2.8.3.0.

There is only one thing i received at step 7, wich i think i should mention. When i do Wipe -> Format Data, i receive the following message when it's Done:
Updating partition details ...
... done
Full SELinux Support is present.
(in red) E: Failed to get default contexts and file node for storage files.
MTP Enabled
Formatting Data using make_extfs function
You may need to reboot recovery to be able to use /data again.
Updating partition details ...
... done
I did not pay attention to this message, because there was also the Successful message.
But perhaps it does have something to do with my problem of not being able to boot into KatKiss.

Hope you are able to help me with this.
(Maybe i will try to install Nougat for the TF201, since the recovery with TWRP is OK.)

Kind regards, Bert
22nd December 2016, 03:48 PM |#9  
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Quote:
Originally Posted by deltabert

Hello djibe89,
First of all, I would like to thank you very much for this well documented step-by-step guide for upgrading the TF201! It was no problem for me, a novice in this, to follow.

However i do have encountered a problem with booting after the installation of step 8. And i hope you are able to help me with this. When i try to boot the device after Successful installing KatKiss-6.0_TF201_029.zip, open_gapps-arm-6.0-pico-20160320.zip, and Beta-superSU-v2.52.zip, the device seems to be in a boot-loop. The OS never starts up.
I also tried the older KatKiss-6.0_TF201_028.zip with the two other zip files, but the result is the same.

Until step 8, all installations went without major problems. (i made a document from your instructions and documented every step i did, (including serial number received from fastboot etc). So my TF201 is now Unlocked and the bootloader TWRP is at version 2.8.3.0.

There is only one thing i received at step 7, wich i think i should mention. When i do Wipe -> Format Data, i receive the following message when it's Done:

Updating partition details ...
... done
Full SELinux Support is present.
(in red) E: Failed to get default contexts and file node for storage files.
MTP Enabled
Formatting Data using make_extfs function
You may need to reboot recovery to be able to use /data again.
Updating partition details ...
... done
I did not pay attention to this message, because there was also the Successful message.
But perhaps it does have something to do with my problem of not being able to boot into KatKiss.

Hope you are able to help me with this.
(Maybe i will try to install Nougat for the TF201, since the recovery with TWRP is OK.)

Kind regards, Bert

Hi, I'm glad you liked it.
Seems like you chose wrong Filesystem format " Formatting Data using make_extfs function".
We need a F2FS partition.

Go back to your TWRP 2.8 recovery,
wipe all partitions,
chose /data partition and change filesystem to F2FS.
Make sure /Cache partition is F2FS too.
Then you can Install the zips.
Keep in touch.
Merry christmas from France
27th December 2016, 10:57 AM |#10  
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Quote:
Originally Posted by djibe89

Hi, I'm glad you liked it.
Seems like you chose wrong Filesystem format " Formatting Data using make_extfs function".
We need a F2FS partition.

Go back to your TWRP 2.8 recovery,
wipe all partitions,
chose /data partition and change filesystem to F2FS.
Make sure /Cache partition is F2FS too.
Then you can Install the zips.
Keep in touch.
Merry christmas from France

Hello djibe89,

Thank you for answering my question.
But before receiving your answer I was already trying to do the steps again (from step 4), which was (looking back) obviously a bad idea. I am afraid I made a mess of it right now. First of all i should have read the error msg carefully to see the file system type. I was aware that this KatKiss is using f2fs?
I already send you a pm describing what i had done, and that i had to stop experimenting until after Christmas
Today (27 dec.) i tried an other attempt to revive my tab, and started by: 2ND PART, NvFlash---
Got the tab in APX mode again (Windows Device Manager shows Asus T. P. APX..)

So i went on with 5 - RECOVERY
I do get the fastboot screen; with the menu's RCK - Android - USB - Wipe Date, and went to USB.
Giving the command fastboot devices gives the serial number, so its connected.
Then i gave fastboot -i 0x0b05 flash recovery twrp_tf201t.blob which gave
sending 'recovery' <7934 KB>...
OKAY [2.213s]
writing 'recovery'...
OKAY [ 3.534s]
finished. total time: 5.747s
then a reboot bootloader with: fastboot -i 0x0b05 reboot-bootloader
After this i had the TWEAMWIN screen again.
with adb devices i get the 012345678ABCDEF recovery message. So, adb can connect.
But re-installing HairyBean_Bootloader with
adb push HairyBean_Bootloader_TWRP2.5.zip /sdcard
gives an error on the tab.
Then i realized that i have just re-installed TWRP 2.6, which is intended for JB bootloader! So i booted the tab to fastboot and installed the TWRP 2.8 with:
fastboot -i 0x0b05 flash recovery twrp.blob That went OK.
Now i tried to install KatKitt6 again, now with all partitions formatted as f2fs.
But i stil don't get Katkitt6 booting. It keeps rebooting.

================================================== =============

Today, 28 dec. i did an other attempt and made photo's from the screen of the tab.
From within TRWP 2.8.3.0, I started at Step 7 – SET FILESYSTEM TO F2FS
Wipe :: Format Data, uses ext4 filesystem (as described in the tutorial) and takes indeed a long time.
Next Wipe :: Advanced Wipe ONLY the data folder, and set to F2FS
Also with the Cache partition also set to F2FS
Step 8 – Install Android 6 ROM. From TWRP Wipe :: Advanced Wipe. Select Dalvik Cache, System, Cache and Internal Storage. Swipe to cleanup. NO mention of changing the filesystem to F2FS so I left these as they are!
Installation of the tree .ZIP files, see pictures below:
Unfortunately, i am only able to put links to photo's when i have at least posted 10 posts. Since i am new here i try an other way of linking to the photos:
Step 7 and 8 - Photo 1 https: // deltabert.stackstorage.com/s/gszDWyVd9sqHiQs
Step 7 and 8 - photo 2 https: // deltabert.stackstorage.com/s/Ju0tmwMIUjJXHg4
Step 7 and 8 - photo 3 https: // deltabert.stackstorage.com/s/o0tTQ3tPBHF85Wu
Step 7 and 8 - photo 4 https: // deltabert.stackstorage.com/s/Cls41PHHcCa0TKr

And when I press Reboot, after Wiping Dalvik Cache, the tab keeps rebooting! This time I see no error messages.
And believe me, I left it booting for hours…
Any idea as what I could do next?
30th December 2016, 10:26 AM |#11  
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Quote:
Originally Posted by deltabert

Hello djibe89,

Thank you for answering my question.
But before receiving your answer I was already trying to do the steps again (from step 4), which was (looking back) obviously a bad idea. I am afraid I made a mess of it right now. First of all i should have read the error msg carefully to see the file system type. I was aware that this KatKiss is using f2fs?
I already send you a pm describing what i had done, and that i had to stop experimenting until after Christmas
Today i tried an other attempt to revive my tab, and started by: 2ND PART, NvFlash---
But unfortunately i am not able to get the tab in APX mode again.

Then i skipped this en went on with 5 - RECOVERY
I do get the fastboot screen; with the menu's RCK - Android - USB - Wipe Date, and went to USB.
Giving the command fastboot devices gives the serial number, so its connected.
Then i gave fastboot -i 0x0b05 flash recovery twrp_tf201t.blob which gave

sending 'recovery' <7934 KB>...
OKAY [2.213s]
writing 'recovery'...
OKAY [ 3.534s]
finished. total time: 5.747s
then a reboot bootloader with: fastboot -i 0x0b05 reboot-bootloader
After this i had the TWEAMWIN screen again.
with adb devices i get the 012345678ABCDEF recovery message. So, adb can connect.
But re-installing HairyBean_Bootloader with
adb push HairyBean_Bootloader_TWRP2.5.zip /sdcard
gives an error on the tab.
Then i realized that i have just re-installed TWRP 2.6, which is intended for JB bootloader! So i booted the tab to fastboot and installed the TWRP 2.8 with:
fastboot -i 0x0b05 flash recovery twrp.blob That went OK.
Now i tried to install KatKitt6 again, now with all partitions formatted as f2fs.
But i stil don't get Katkitt6 booting. It keeps rebooting.

Besides this, I am still worried that NvFlash might be no longer on the tab...
And i don't get the FlatLine booting with volume-up and power anymore...

================================================== =============

Today, 28 dec. i did an other attempt and made photo's from the screen of the tab.
From within TRWP 2.8.3.0, I started at Step 7 – SET FILESYSTEM TO F2FS
Wipe :: Format Data, uses ext4 filesystem (as described in the tutorial) and takes indeed a long time.
Next Wipe :: Advanced Wipe ONLY the data folder, and set to F2FS
Also with the Cache partition also set to F2FS
Step 8 – Install Android 6 ROM. From TWRP Wipe :: Advanced Wipe. Select Dalvik Cache, System, Cache and Internal Storage. Swipe to cleanup. NO mention of changing the filesystem to F2FS so I left these as they are!
Installation of the tree .ZIP files, see pictures below:
Unfortunately, i am only able to put links to photo's when i have at least posted 10 posts. Since i am new here i try an other way of linking to the photos:
Step 7 and 8 - Photo 1 https: // deltabert.stackstorage.com/s/gszDWyVd9sqHiQs
Step 7 and 8 - photo 2 https: // deltabert.stackstorage.com/s/Ju0tmwMIUjJXHg4
Step 7 and 8 - photo 3 https: // deltabert.stackstorage.com/s/o0tTQ3tPBHF85Wu
Step 7 and 8 - photo 4 https: // deltabert.stackstorage.com/s/Cls41PHHcCa0TKr

And when I press Reboot, after Wiping Dalvik Cache, the tab keeps rebooting! This time I see no error messages.
And believe me, I left it booting for hours…
Any idea as what I could do next?

did you ever get through this part?
im on the same boat.....finished everything successfully but once i install the ROM it keeps rebooting and stays on the TWRP until i reboot again
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android 7.1.2 nougat, bootloader / fastboot, tf201 prime, tutorial how to

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