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

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maisomenos

Member
Jan 20, 2021
11
5
Hello. I'm trying to install android 7.1 on the tf201 but I have a problem with twrp flashing.

Basically the touch screen of the tablet is broken and I cannot flash the hairybean recovery from twrp 2.6. I have the keyboard dongle with the mouse cable attached but the mouse doesn't seems to work. I read that from version 2.2 twrp has otg mouse support, but both the mouse from the keyboard and a usb mouse linked via the keyboard are not working. Will the otg cable connected directly to the tablet make any difference ?

I also read that I can use adb shell twrp without using the touch screen but it is available from twrp 2.8. and the last official twrp release for the tf201 is 2.6.3.0.

It seems that unofficial twrp version for the device have to be flashed from hairybean (i'd need twrp 2.8 or higher to use adb shell without having to use the touch screen).

Can someone help me out? thanks in advance.
 

Beeble1983

Member
Jul 2, 2010
23
2
Sydney
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
I'm stuck at this point. everything else backing up has worked fine.

I'm not 100% sure if 'APX mode' is just the screen RCK, ANDROID, USB, Wipe
Can anyone help?
 

Beeble1983

Member
Jul 2, 2010
23
2
Sydney
Hi, it is stated you must boot in APX mode, not bootloader (volume+, not volume-).
Screen IS black in APX mode. But you can check drivers are ok in Windows device management window
It was the Driver, i uninstalled it in Device Manager and tied again - worked perfect!

I have KANG Twrp, and was able to install Kiss and SU.
But GApps pico 7.1 failed Error 64 - ***incompatible device detected***

I rebooted and tried to install GApps separately but same issue
 
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Beeble1983

Member
Jul 2, 2010
23
2
Sydney
It was the Driver, i uninstalled it in Device Manager and tied again - worked perfect!

I have KANG Twrp, and was able to install Kiss and SU.
But GApps pico 7.1 failed Error 64 - ***incompatible device detected***

I rebooted and tried to install GApps separately but same issue
Sorry, it was another silly question. The file i have is ARM64, the installer was telling me to use the ARM version 🤦‍♂️
 

Beeble1983

Member
Jul 2, 2010
23
2
Sydney
Alright!!! I have been able to flash my TF201 after 10 years!
Thank you so much to @djibe89 for not only making this post, but for still being active on this Thread in 2021

I just want to add a few things because there is still a few out there who still need this upgrade but get stuck when trying to Unlock the BootLoader. I think it has been removed from ASUS. Go Here, (it is laid out for TF201) and will allow a work around.

The only other issue i had was when Installing, I received Error 64 - Device not compatible. It says...."use the version that is right for your device = ARM"
It took me longer than i want to admit that i was trying to install ARM64. Simple to download my own version of Open_GApp 7.1 ARM - pico. (From link in OP guide)

I love this forum!
 

Ice_83

Member
Nov 28, 2010
14
3
upgraded my TF201 using your instructions @djibe89, thanks a lot for your effort to summarise all this. All worked really well except the unlocking where i did have to follow the link you gave, experiment ask a few questions.

Not sure how long android 7 will stay ok but it definitively still ok now as i can e.g. watch movies on the tablet which didnt work on android 4.

@maisomenos , thanks a lot to you too!
 

Stealth75

Member
Feb 22, 2021
32
4
@djibe89 I finally made it! Thanks to some extra help from many others here on this forum who I've already thanked.
I just have to ask though, I'm not sure if I missed something or did something wrong but my tablet is now slow AF!
I followed your tips for Kernel Adiutor and your other tips but I'm pretty sure my tablet is now actually slower than pre-rom.
Any ideas why?
 

jayrich131

New member
Sep 16, 2021
1
0
Hi, @djibe89

Thanks heaps for the tutorial man. I'm useless at computer stuff but you made the process doable and I managed to get it done. I am stuck on the setup step for the new version though. It just keeps saying Checking for Updates endlessly and if I go back and try to skip the step then the setup crashes. I saw a lot of questions in the thread about other bugs but didn't see any about this particular step being an issue. Do you have any ideas or memory of this step that might help me?

Thanks,
James
 

djibe89

Senior Member
May 24, 2014
705
417
Google Nexus 4
Hi, @djibe89

Thanks heaps for the tutorial man. I'm useless at computer stuff but you made the process doable and I managed to get it done. I am stuck on the setup step for the new version though. It just keeps saying Checking for Updates endlessly and if I go back and try to skip the step then the setup crashes. I saw a lot of questions in the thread about other bugs but didn't see any about this particular step being an issue. Do you have any ideas or memory of this step that might help me?

Thanks,
James
Hi,
it seems latest OpenGApps are causing troubles.
Can you try with BitGApps ARM 7.1.2 R38 ? https://www.androidfilehost.com/?fid=7161016148664807608

Keep in touch
 

rmcq

Member
Sep 13, 2021
12
2
Hi. After successfully unlocking my TF201 I’m trying to upgrade it to Android 7.1 following the procedure, but I’m stuck in step 6) Bootloader, more precisely after flashing HairyBean_Bootloader_TWRP2.5.zip to /sdcard.

Up to this point, I believe everything went perfect.

However, after choosing the “Reboot” option in TWRP, the tablet reboots normally to the ‘default’ Android 4.1.1 version, and never presents the “Do Not Install when SuperSU is proposed” option, nor does it open in HairyBean TWRP recovery.

Any suggestion on what might be the problem?

Thanks.
 

djibe89

Senior Member
May 24, 2014
705
417
Google Nexus 4
Hi. After successfully unlocking my TF201 I’m trying to upgrade it to Android 7.1 following the procedure, but I’m stuck in step 6) Bootloader, more precisely after flashing HairyBean_Bootloader_TWRP2.5.zip to /sdcard.

Up to this point, I believe everything went perfect.

However, after choosing the “Reboot” option in TWRP, the tablet reboots normally to the ‘default’ Android 4.1.1 version, and never presents the “Do Not Install when SuperSU is proposed” option, nor does it open in HairyBean TWRP recovery.

Any suggestion on what might be the problem?

Thanks.
Hi,

after pushing the bootloader, did you Install it ?
 

rmcq

Member
Sep 13, 2021
12
2
Hi,

after pushing the bootloader, did you Install it ?
Hi. I went to TWRP v2.6.3.0 -> Install -> Micro SDCard -> HairyBean_bootloader_TRRP2.5.zip and installed it.
The console indicated "Installing files.... Done..." and requested a reboot, which I did.
The tablet just reboots to TWRP v2.6.3.0 again, and trying to input the next command (fastboot -i 0x0b05 flash recovery twrp-3.2.3-0_KANG-tf201t.img) in the prompt only gives a < waiting for device > .
 

djibe89

Senior Member
May 24, 2014
705
417
Google Nexus 4
Hi. I went to TWRP v2.6.3.0 -> Install -> Micro SDCard -> HairyBean_bootloader_TRRP2.5.zip and installed it.
The console indicated "Installing files.... Done..." and requested a reboot, which I did.
The tablet just reboots to TWRP v2.6.3.0 again, and trying to input the next command (fastboot -i 0x0b05 flash recovery twrp-3.2.3-0_KANG-tf201t.img) in the prompt only gives a < waiting for device > .
In Windows's Device Management menu, do you see the tab ?
 

rmcq

Member
Sep 13, 2021
12
2
In Windows's Device Management menu, do you see the tab ?

I see an ASUS Android Device, but the controllers have a triangle with exclamation point in the symbol.
I've tried right-click install (without much success) and installing directly from the Device Manager > Action > Add Legacy Hardware and selecting the .inf files.
 

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  • 26
    [GUIDE/TUTORIAL] Asus Transformer Prime to Android 7.1/LineageOS 14.1
    [GUIDE/TUTORIAL/HOWTO] 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).

    ### I'll make a few comments like this, read these or you may miss something.

    ### The Asus Transformer Prime codename is TF201.

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


    CHANGELOG

    v11. Improvemed unlock section
    v10. Updated links
    v9. ROM v39 and removed obsolete info
    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
    ### Asus support is here : https://www.asus.com/Tablets/Eee_Pad_Transformer_Prime_TF201/HelpDesk_BIOS/

    • 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 v39 Android 7.1
    XDA Thread: https://forum.xda-developers.com/transformer-tf700/development/rom-t3457417
    Download here: https://downloads.timduru.org/android/tf201/K.A.T/KatKiss/7.x/dev/ or https://www.androidfilehost.com/?fid=14943124697586357425

    + OpenGapps ARM 7.1 ARM Pico (NO OTHER DISTRIB THAT ARM PICO please): https://opengapps.org/?arch=arm&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/showpost.php?p=75240547&postcount=166


    - For Linux, I have no experience. Every tools should be here : https://github.com/AndroidRoot/androidroot.github.io/tree/master/download

    - 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.

    ### It probably won't work that simple.
    ### The solution is here, but I didn't have to test it: https://forum.xda-developers.com/t/howto-unlock-tf700t-in-2020.4157143/post-85255809


    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/showthread.php?t=1927818

    ### If you have error "not enough space for GApps (error 70), follow this tutorial https://forum.xda-developers.com/showpost.php?p=73403429&postcount=137


    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/android/help/fix-error-70-install-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) 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).


    11) 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)


    12) 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

    Enjoy your new tab ;-)
    djibe

    Thanks : @timduru, matthill.eu, Kang for updated TWRP, TWRP team, Android Root Team, Lineage OS team, TacoNikky, Saber
    2
    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.
    2
    upgraded my TF201 using your instructions @djibe89, thanks a lot for your effort to summarise all this. All worked really well except the unlocking where i did have to follow the link you gave, experiment ask a few questions.

    Not sure how long android 7 will stay ok but it definitively still ok now as i can e.g. watch movies on the tablet which didnt work on android 4.

    @maisomenos , thanks a lot to you too!
    1
    I am having this same problem, Win 7 SP1

    - Did you install .inf with right click-> Install or double click on it ?
    - You may try using Windows device manager :
    You might try to select the inf file from Device Manager:
    Right-click the device, select Update Driver Software, then Let me pick, click Have disk, Browse to the inf file and install.

    Keep in touch with your fix,
    By the way, migrate to Windows 10 for free : https://www.microsoft.com/en-us/accessibility/windows10upgrade
    1
    Hi @Stealth75 , glad you did it.
    M sorry I can't be more precise about the unlock but I dont have the tab anymore.

    For performances, look at the Root and Performances chapters of my tutorial, especially the Force GPU option.

    Keep in touch