[ROM][N 7.1.2] [ KatKiss - Nougatella #039 ]

[Cr4ck86]

You're right! I wanted @Cr4ck86 to read what you said about adb and fastboot access and of course a hint to @Buster99

Thank you both for being in touch! Maybe I didn't explain myself clearly, sorry for my English. When I got the "daemon" messages, then I retyped several times the command "adb devices" and there was no response, just this, over and over:
C:\adb>adb devices
List of devices attached

C:\adb>

So, what I thought is that I couldn't reach fastboot protocol, and I still don't know what to do. In order to do a Buster99, I'll manage to get into the fastboot, but whenever I power on my tablet, it goes through ASUS logo, then shows 4 Linux penguins and a text, then the Teamwin logo that I mentioned. How can I do anything of what you said if I can't reach the fastboot?

Thanks a lot!

 

[whoosename]

Thank you both for being in touch! Maybe I didn't explain myself clearly, sorry for my English. When I got the "daemon" messages, then I retyped several times the command "adb devices" and there was no response, just this, over and over:
C:\adb>adb devices
List of devices attached

C:\adb>

So, what I thought is that I couldn't reach fastboot protocol, and I still don't know what to do. In order to do a Buster99, I'll manage to get into the fastboot, but whenever I power on my tablet, it goes through ASUS logo, then shows 4 Linux penguins and a text, then the Teamwin logo that I mentioned. How can I do anything of what you said if I can't reach the fastboot?

Thanks a lot!

For Fastboot you need the "fastboot" command: fastboot devices . On my Windows machine I use the tool "Minimal ADB and Fastboot" from here: https://forum.xda-developers.com/showthread.php?t=2317790
You should get a similar output like from "adb devices" command.

 

[ebonit]

So, what I thought is that I couldn't reach fastboot protocol, and I still don't know what to do. In order to do a Buster99, I'll manage to get into the fastboot, but whenever I power on my tablet, it goes through ASUS logo, then shows 4 Linux penguins and a text, then the Teamwin logo that I mentioned. How can I do anything of what you said if I can't reach the fastboot?

First of all download "Minimal ADB and Fastboot" and install it on your PC. Then power on your TF300T and hold "Vol down" at same time. Three icons RCK, ANDROID and WIPE DATA appear on the screen. Don't pay attention of it. However in the left above corner the notice "Starting Fastboot USB download protocol" appears. So you may connect the tablet with your PC via USB.
Open “Minimal ADB and Fastboot” and put in "fastboot devices". The device should appear as "xxx device". This is your serial number. After that you may do a Buster99 step by step.
Please don't touch the WIPE DATA icon. You'll brick your device for good!

 

[whoosename]

........ Then power on your TF300T and hold "Vol down" at same time. Three icons RCK, ANDROID and WIPE DATA appear on the screen. Don't pay attention of it. However in the left above corner the notice "Starting Fastboot USB download protocol" appears. So you may connect the tablet with your PC via USB.
Open “Minimal ADB and Fastboot” and put in "fastboot devices". The device should appear as "xxx device". This is your serial number. After that you may do a Buster99 step by step.
Please don't touch the WIPE DATA icon. You'll brick your device for good!

You were way faster than me! That is the information I was looking for. It ha s been a long time since I had to use these steps

 

[Cr4ck86]

You were way faster than me! That is the information I was looking for. It ha s been a long time since I had to use these steps

I didn’t explain myself well, definitely. I touched yesterday that damn icon accidentally, so now I’m in this situation due to that.
Now, running the [FWUL]adb/fastboot without any installation and driver issues [v3.1] in other computer, I managed to write the command “adb devices” and get some answers: the serial number and the message that is connected into the recovery, as you can see here. h t t p://imgfz.com/i/KFRJu9j.jpeg
I tried other commands, adb and fastboot, and I don’t get any answers, just error messages. h t t p://imgfz.com/i/mzfeR1T.jpeg
I also tried with the Minimal ADB Drivers in my Windows PC, and it was fruitless as well, like the previous times I tried.

(Excuse me for the links, I'm not able to post links yet).

 

[ebonit]

I touched yesterday that damn icon accidentally, so now I’m in this situation due to that.

When you are on the screen with 3 icons you are in the bootloader and fastboot mode!
If you cannot get into the bootloader by holding the Volume Up and Power buttons the device is bricked for good! - sorry.

 

[Cr4ck86]

When you are on the screen with 3 icons you are in the bootloader and fastboot mode!
If you cannot get into the bootloader by holding the Volume Up and Power buttons the device is bricked for good! - sorry.

So, do you think I have to bury my tablet, or is there any hope?

 

[gc2712]

So, do you think I have to bury my tablet, or is there any hope?

Perhaps I am misreading the screenshots you posted links to but the first one suggests that ADB is working and showing a device identifier? The second one shows you have the "your own command" radio button selected instead of the "fastboot" button. I use Linux so I am not sure what gives you fastboot commands in the Windows environment. Does it require admin access to run?

If, in fact, adb is registering your device on the PC then you can (re)install TWRP recovery via adb using this link https://www.xda-developers.com/how-to-install-twrp/ .

But perhaps try "adb reboot bootloader" first and see if your tablet reboots into fastboot mode. @ebonit is definitely the goto person when advising on 'sort of' (semi) bricked devices for the TF300

 

[ebonit]

So, do you think I have to bury my tablet, or is there any hope?

Yes, there is! This tablet is it really worth to be rescued by exchanging the mainboard.
Please read carefully the thread by @huebinger about how to replace the mainboard https://forum.xda-developers.com/showthread.php?t=2368372.
For TF300T mainboards there are different offers on ebay.com in a range of 20-30 USD.

 

[Cr4ck86]

Perhaps I am misreading the screenshots you posted links to but the first one suggests that ADB is working and showing a device identifier? The second one shows you have the "your own command" radio button selected instead of the "fastboot" button. I use Linux so I am not sure what gives you fastboot commands in the Windows environment. Does it require admin access to run?



If, in fact, adb is registering your device on the PC then you can (re)install TWRP recovery via adb using this link https://www.xda-developers.com/how-to-install-twrp/ .



But perhaps try "adb reboot bootloader" first and see if your tablet reboots into fastboot mode. @ebonit is definitely the goto person when advising on 'sort of' (semi) bricked devices for the TF300

Thanks for your answer. You're right, the computer I was using with the Linux utility is the only one that showed me the device identifier, but I typed other commands and they didn't work at all. I can't reboot the tablet into fastboot mode, I tried it several times and it was impossible.
Do you think the TWRP solution via ADB that you say would work? I didn't think that was possible, I'll give it a try.
After reading you, I'm creating a Live USB with Linux to try the ADB commands from it, just in case. I hope I can see the device identifier again and do anything with my Transformer.

Enviado desde mi MI 8 mediante Tapatalk

---------- Post added at 10:32 AM ---------- Previous post was at 10:26 AM ----------

Yes, there is! This tablet is it really worth to be rescued by exchanging the mainboard.

Please read carefully the thread by @huebinger about how to replace the mainboard https://forum.xda-developers.com/showthread.php?t=2368372.

For TF300T mainboards there are different offers on ebay.com in a range of 20-30 USD.

Wow, I haven't thought that! It would be difficult, but I think it's the last chance to rescue my tablet after all. I will do a search on ebay to see what options I have here in Spain. Thank you very much @ebonit!

Enviado desde mi MI 8 mediante Tapatalk

 

[gc2712]

So, do you think I have to bury my tablet, or is there any hope?

After reading you, I'm creating a Live USB with Linux to try the ADB commands from it, just in case. I hope I can see the device identifier again and do anything with my Transformer.

I hope it works for you. Otherwise @ebonit suggestion of a new motherboard may be the only way restore your tablet. Do let us know how you go.

 

[ebonit]

Thank you very much @ebonit!

You are welcome! Using the thanks button is greatly appreciated.
To be finally sure your device is bricked power it on together with holding Vol down. If the notice "Starting Fastboot USB download protocol" and the 3 icons don't appear the brick is ultimate.

 

[blurky]

Hello everyone,

I have to tell you right away that I don't have a lot of rooting experience, all I have rooted is my Samsung Galaxy S about 10 years back ...

I am completely fed up with those annoying standard apps and I feel that my tab is getting very slow, even after a factory reset, among other things loading websites takes a long time, so last weekend I tried to root my tf300t (with motochopper) to install the Katkiss 7.1.2 rom, but sadly with no succes, I soon figured out that I updated it a while ago to android 4.2.1 so rooting doesn't work.
I then tried several other things described in (old) forums and youtube, tried to downgrade to 4.1.1 but all with no succes, I have spend about 5 hours on it now...

Is someone willing to describe step by step what to do, what do download for my windows laptop and what to do with the tab?
I've already saved everything I need from the tab so no need to describe that point.

specs tab:
android 4.2.1
Build 10.6.1.27.5

specs laptop:
win 10
64bit

Tnx, hope someone can help!?

Regards
Jeroen

 

[gc2712]

Not sure why you think you have to downgrade to 4.1.1. I assume you have already unlocked the bootloader correctly and have ADB installed on the PC? If so, You should be able to just follow the instructions in the Original Post.

 

[blurky]

Not sure why you think you have to downgrade to 4.1.1. I assume you have already unlocked the bootloader correctly and have ADB installed on the PC? If so, You should be able to just follow the instructions in the Original Post.

Thanks for the reply.
I tried to install ADB but it doesn't do anything, just opens CMD for a second and closes it...

 

[ebonit]

specs tab:
android 4.2.1
Build 10.6.1.27.5

Jeroen

Be happy that your device is on the latest ASUS firmware. With your knowledge keep the hands off of any changes. Never change a running system! The TF300T will be bricked easily by lack of knowledge.
First of all reduce the amount of apps on your device as less as possible. That will increase the performance and you will have more fun..
After that go through this Guide/Tutorial https://forum.xda-developers.com/tr...de-asus-transformer-pad-tf300t-stock-t3554744 very carefully step by step. In any case you need help you will find it!
Good luck!

 

[blurky]

Be happy that your device is on the latest ASUS firmware. With your knowledge keep the hands off of any changes. Never change a running system! The TF300T will be bricked easily by lack of knowledge.
First of all reduce the amount of apps on your device as less as possible. That will increase the performance and you will have more fun..
After that go through this Guide/Tutorial https://forum.xda-developers.com/tr...de-asus-transformer-pad-tf300t-stock-t3554744 very carefully step by step. In any case you need help you will find it!
Good luck!

Thank you very much, didn't found this step by step thread yet...

I did the step by step thing and came to step 5, and now there is an issue

5 - 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.

On TWRP first launch, check Never show this screen during boot again, then Swipe to Allow Modifications.
Go to Backup, make sure System, Data and Boot are cecked.
Now Select Storage -> Micro SDCard,
Swipe to Backup.

From here the tab says there is only 56mb free space on the micro sd.
I have 2 4Gb class 10 micro sd's, on one of them the rom files, and the other I had lying around, formatted an extra time to fat32, checked the free space (3,66gb) so that must be enough, but on both sd's it says only 56mb free space.
I tried a reboot of the tab but that didn't work..
What to do now?

[EDIT]

I tried checking "disable free space check before backup" option but then after "swipe to backup" it says
"Can not create '/external_sdcard/TWRP' folder (I/O error)
Failed to make backup folder.

Seems it can not read/write the sd-card...?

 

[ebonit]

I did the step by step thing and came to step 5, and now there is an issue
From here the tab says there is only 56mb free space on the micro sd.

The tablet TF300T is available with 16GB or 32GB internal memory. There is also one slot for a micro SD card with minimal 16GB or better 32GB external memory. Keep in mind, this is basic knowledge!
Your SD cards are useless totally because of the less capacity. Put a 32GB SD card in the slot. Then your TWRP backup will end successfully. No issue anymore!

 

[blurky]

The tablet TF300T is available with 16GB or 32GB internal memory. There is also one slot for a micro SD card with minimal 16GB or better 32GB external memory. Keep in mind, this is basic knowledge!
Your SD cards are useless totally because of the less capacity. Put a 32GB SD card in the slot. Then your TWRP backup will end successfully. No issue anymore!

Thank you, at the moment you wrote this I found a 32Gb sd card, tried it and indeed it began backing up, but sadly after 2 min gave an error.
Am now slow formating the 32gb and trying again..
To be continued..


[EDIT]

It seems to work, tab is now booting the new rom

Thank you very much ebonit!

P.s. about the only 16 or 32gb card thing... I didn't know that

 

[benvivi]

New rom version available: KatKiss-7.1_TF300T_039.zip




Changelog:
- Port September 8.1 Oreo Security Fixes
- Port August 8.1 Oreo Security Fixes
- Port July 8.1 Oreo Security Fixes
- Port June 8.1 Oreo Security Fixes


Please note that it will be the last version for the TF300
With Android 10 out, it'd be more and more of a pain to backport things as google will abandon 8.x
Hope you enjoyed the rom through the years

Thank you very much for your work