yashsingh1/xdaforums huggingface dataset:
[Asus  Eee Pad Transformer Prime] smyrnasurfin:
I had two problems, it didn't like the PICO gapps and when I re-booted the system and ASUS page flashed the blue line quickly then hung on the ASUS splash page.

I did the following steps multiple times to make sure I didn't leave something out:

"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 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."

i tried flashing everything in one package, then individually twice.

I was successful to this point:

"Now enter in new recovery with Volume+ : recovery is now TWRP 2.8.3.0

### Your tablet will be seen by Windows as a TF300T now !"

What should I try?
[Asus  Eee Pad Transformer Prime] Nektopoli:
Update you TWRP first [I'm using 3.1.0-1] on my TF201 then;

twrp: /wipe/format data then type yes

After it's done go to Wipe//Advanced Wipe//Select Data

Tap “Repair or Change File System”//”Change File System//F2FS >>>> Swipe to Change

Wipe dalvik cache, system, cache, data, internal storage

Flash the rom

Flash the SuperSU.zip

Flash gapps

Wipe cache/dalvik

Reboot
[Asus  Eee Pad Transformer Prime] smyrnasurfin:
noob question, I downloaded the image but do I "nvflash -r --download 7 twrp-3.0.2-0-tf201t.img" because when I tried that said file to large
[Asus  Eee Pad Transformer Prime] Nektopoli:
Crap, I don't know I always update TWRP using the TWRP recovery console, sorry.

NP
[Asus  Eee Pad Transformer Prime] smyrnasurfin:
this got me there:

https://xdaforums.com/transformer-prime/development/recovery-kang-twrp-tf201t-2-8-x-xarea51-t3047675

---------- Post added at 08:13 PM ---------- Previous post was at 07:20 PM ----------

Still didn't get there, I believe this to be my problem:

In Windows command prompt, type :

"Code:adb reboot-bootloader

tab reboots in bootloader mode and the USB icon is gone, it's perfect."

Tablet never rebooted in bootloader, I manually rebooted but the USB icon was still there.

I can't seem to get it to manually reboot. I have to force it and then the USB icon is still there.

I am running the newest TWRP and am able to access loading files, would the tab not rebooting in bootloader be my problem?

I was able to recover to Jelly Bean after soft bricking. But since then getting back to a newer ROM on Win 10 (I was on Win 7) has been challenging.
[Asus  Eee Pad Transformer Prime] Nektopoli:
If you can get into TWRP you should be able to flash the new ROM, will it let you wipe the "data" partition?

NP
[Asus  Eee Pad Transformer Prime] swissjames:
Hi djibe89

thanks for the great work !

Finally, after much hesitation, I decided to upgrade my TF201, and your guide seemed very reassuring that I could manage it. (I have no experience with Android except as a user...)

So I was able to get through your instructions till step 6 where I got stuck with the reboot fo the system after the installation of HairyBean TWRP.

The last steps were as follows:

- Clicked “Reboot System”

“Super SU” was not offered for installation

HairyBean TWRP was launched

- In Windows typed “adb reboot-bootloader”

-> Error: device not found

- Swiched off tab and restart

The following messages appear on tab:

-> “key driver not found.. Booting OS

Android cardhu-user bootloader <1.00> released “WW-epad-10.6.1.27.1-20130711” A03

Starting Fastboot USB download Protocol

RCK, Android, Wipe Data icons are offered RCK is flashing

- Confirmed RCK: Androwook pops up

- Tried to copy the logfile to the sdcard -> no folders are shown on sd-card, copy of the logfile failed

- Tab is not shown on windows

When I restart the tab (with or without connection to the PC), it gets till the white "ASUS" on black screen and the writing "The Device is UnLocked"

Windows OS is Win 7 Professional

Hope you are able to help me with this.

Kind regards

James
[Asus  Eee Pad Transformer Prime] smyrnasurfin:
It says Wiping data without wiping data/media.

This also never happens although it is recognized as a TF300T MTP devi.ce
[Asus  Eee Pad Transformer Prime] swissjames:
Hi Nektopoli

Thank you for the quick answer.

When I click on "wipe", I have the choice between "advanced wipe", "format Data" and "Swipe to Factory Reset" (wipes Data, Cache and Dalvik)

In "advanced wipe" I can choose Dalvik Cache, System, Cache, Data, Micro SD-card and SD-Ext

So I only wipe the "data" partition in the advanced wipe ?

Kind regards

James
[Asus  Eee Pad Transformer Prime] Nektopoli:
Go to TWRP then [Wipe] (upper right button) [Format Data] (grey button, to the right of [Advanced Wipe])> then type yes

I just follow the instructions from 5.1.1 here > > > https://xdaforums.com/transformer-prime/development/rom-katkiss-5-1-tf201-22-t3080892

NP
[Asus  Eee Pad Transformer Prime] swissjames:
Hi Nektopoli

Thank you for the quick answer.

So I formatted the data as instructed. (Before doing this I removed the SD-card)

Results:

- Formatting data using make_ext4fs ...

- Done

- Formatting Data using make_ext4fs...

- Done

- updating partition details...

Data Format Complete

Successful

trying to follow the instructions on https://xdaforums.com/transformer-prime/development/rom-katkiss-5-1-tf201-22-t3080892

I hit "back"

screen where I typed "yes" is displayed

I hit return sign

I hit "advanced wipe"

I select Dalvik Cache, System, Cache, data to be wiped. "Internal storage" is not offered, only Micro-SDcard and SD-Ext (which I did not select)

No chance to type “Repair or Change File System”//”Change File System//F2FS

Results:

- Done.

- You may need to reboot recovery to be able to use /data again

- Updating partition details...

- Formatting data using make_ext4fs... Done

- You may need to reboot recovery to be able to use /data again

- Updating partition details...

- Wiping Dalvik Cache Directories ...

- --Dalvik Cach Directories Wipe Complete !

- Formatting System using make_ext4fs...

- Done

- Formatting Cache using mke2fs...

- Done

- Whiping data without wiping /data/media ...

- Done

- Updating partition details...

Wipe complete

Successful

Now how to proceed ?

I installed the Micro SDcard again.

I connect the tab to the PC. I switch it off, it restarts immediately.

So I did it controlled, holding down start and the volume -

got to TWRP v 2.8.3.0 screen AND the tab is shown on PC as TF300T !!

typed "adb reboot-bootloader"

Result:

* daemon not running. starting it now on port 5037 *

* daemon started successfully *

I assume step 6 has been finished successfully, so I proceed with step 7 "Set Filesystem to F2FS"

on the TWRP screen I find the Change File System button as indicated in the script. Selected the data partition and swyped.

Results:

overall: Failed

lots of errors, unfortunately...

E: Unable to mount storage

E: Unable to mount /data/media during GUI startup.

E: Unable to mount '/cache'

Kernel does not have support for reading SELinux contents.

E: Unable to mount '/cache'

E: Unable to set emmc bootloader message.

E: Unable to mount '/cache'

E: Failed to get default contexts and file mode for storage files.

E: Unable to mount /data/media/TWRP/.twrps when trying ro read settings file.

E: Unable to mount '/data'

MTP enabled

Formatting Data using mkfs.f2fs...

E: Unable to wipe '/data'

E: Unknown MTP message type: 1

E: Error changing file system

Updating partition details...

E: Unable to mount '/system'

E: Unable to mount '/cache'

E: Unable to mount '/data'

... done

E: Unable to mount storage.

If I go to "reboot system" the following message appears: "No OS Installed ! Are you sure you wish to reboot ?

So, what's next ? Should I continue with step 8 "Install Android 7.1", or is there something missing ?

Kind regards

James
[Asus  Eee Pad Transformer Prime] gtrs36:
Great guide!! thank you very much.
[Asus  Eee Pad Transformer Prime] Nektopoli:
There's one thing that you have to do with the new TWRPs, newer TWRPs "LOCK" the system partition as "Read Only".

From TWRP's home page click the [MOUNT] button and make sure the "Mount System Partition read-only" in UN-CHECKED.

Also, since you have a working TWRP console there is no reason to you ADB tools unless you brick. Also no reason to remove the micro SD card

NP
[Asus  Eee Pad Transformer Prime] smyrnasurfin:
So my whole problem was bootloader not being .18 when I did the Power + Volume -.

I never would have guessed that that was the problem as I was at .18 prior to changing out my battery which started this whole mess.

I used https://xdaforums.com/showthread.php?t=2187982 and downloaded the bootloader directly from ASUS, followed the thread instructions to unzip twice to get the BLOB file and used TWRP to flash/install. After that I followed the instructions from the first page and am now running Nougat! WHEW...it's been a month of on again off again and without these forums and their vast threads covering everything I wouldn't have made it!
[Asus  Eee Pad Transformer Prime] phren:
I've started installing Katkiss 7.1 (v23), SuperSU and Gapps (pico) on my TF201 (32GB) but there is insufficient space left in system to install Gapps... it looks like I need another 76MB (!). Anyone ran into the same problem? The system partition has 495MB free space and 8MB in use before the install. Do I have to resize the partition somehow? Did something go wrong in the earlier steps perhaps? :confused:

Edit:

This is from the Gapps log:

Total System Size (KB) | 516040

Used System Space (KB) | 450548

Current Free Space (KB) | 65492

Additional Space Required (KB) | 76288
[Asus  Eee Pad Transformer Prime] swissjames:
Hi Nectopoli

I tried to follow your instructions.

quote

There's one thing that you have to do with the new TWRPs, newer TWRPs "LOCK" the system partition as "Read Only".

From TWRP's home page click the [MOUNT] button and make sure the "Mount System Partition read-only" in UN-CHECKED.

Also, since you have a working TWRP console there is no reason to you ADB tools unless you brick. Also no reason to remove the micro SD card.

unquote

Part 2 was easy: I put the SDcard back in and disconnected the tab from the PC

Part 1 does not work: If I click the MOUNT-button on the main screen of TWRP v2.8.3.0, I get the follwing partitions to choose from: System, Cache, Data, Micro SDCard.

Micro SD-Card is selected (and can be unselected), the other boxes are unselected and cannot be selected.

There is another button saying "Disable MTP" and a text "Storage: Internal Storage (0 MB)"

so..

I tried again to change the file system.

Rebooted the tab with power off and then to change File System of the Data Partition: it worked (with the log in red: E: Failed to get default....)

Rebooted the tab with power off and then to change File System of the Cache Partition : it worked (with the log in red: E: Failed to get default....)

Afterwards I was able to proceed with 8 Install Android.

went through like a charm...

Start Android 7.1

Works like a charm after connecting to WLAN and entering the Gmail account.

Thank you very much for your help !

Kind regards

James
[Asus  Eee Pad Transformer Prime] Nektopoli:
Great, now it's time to update that TWRP, but I don't remember is 2.8.3.0 can flash .IMG flies? <ANYONE?

NP

---------- Post added at 06:40 PM ---------- Previous post was at 06:36 PM ----------

swissjames, get into you TWRP console, click the [INSTALL] button and in the bottom right see if you have an [INSTALL IMAGE] button, it should toggle between [INSTALL IMAGE]/[INSTALL ZIP] when pressed.

NP
[Asus  Eee Pad Transformer Prime] phren:
Decided to flash stock and try again. Skipped the unlocking and nvflash parts and continued at step 5 (recovery). All well, TWRP 2.6.3.0 installed. Install Hairybean from TWRP. Then:

The blue bar is visible for just a second, tablet boots into system, not bootloader. HairyBean / Androwook never shows up. Looks like the install just doesn't work. Any ideas? Is it necessary? I continued anyway and could install TWRP 2.8.30 but that's it. From there I run into the insufficient space problem with Gapps and the tablet won't boot into system anymore. I'm kind of lost on how to get it to work.
[Asus  Eee Pad Transformer Prime] gtrs36:
Anybody know how change language on keyboard on nougat rom?
[Asus  Eee Pad Transformer Prime] Kilcrop:
Flash yesterday, went like a charm. Thanks for the easy step by step.

Have been nervous for a minute when Prime first boot in Nougat. The startup app was craching. It was only because I have tried to use french . Back to english everything whent smootly.

My old Flashlight App do not function properly. It only flash once and stay off until reopening the App. Tried a coupple of other apps with same issue. Any hint?
[Asus  Eee Pad Transformer Prime] Nektopoli:
What about installing 5.1.1 just the ROM and seeing if it will boot into the system. Also 'IF' 2.8.3.0 gives you the option to flash .IMG (image) files I would upgrade the TWRP to 3.1.0-1

NP
[Asus  Eee Pad Transformer Prime] tommysausm:
sd-card reader out of order

How to do Step 8 (install the three zips´) without sd-card?

The sd-card reader in the keyboard works.
[Asus  Eee Pad Transformer Prime] GCCC:
Unbrick failed w/ nvflash files

Hello, I received a tf201 tablet that ran 4.1.1 and had files just like your example. I followed your instructions to upgrade and the upgrade failed when I attempted to install nano gapps because of inadequate space. (32 GB tablet, why is the default system partition so small???) So, I must unbrick and did follow the instructions to make nvflash recovery files as I progressed through your tutorial. I attempted to follow the recovery instructions linked in your article. However, the file names used here and there do not match so there is ambiguity. Anyway, I did the wheelie thing, and noticed that I must do so after each nvflash command completes to get APX to reconnect under Windows 10 in an admin cmd window. Is this normal?

So, I did

wheelie ... (ok)

nvflash -r --download 4 bootloader.img (ok)

wheelie ... (ok after APX manual reboot)

nvflash -r --download 5 bricksafe.img (says too large for partition)

The other .img files I have are factory-config.img and unlock-token.img

Where is the JB factory ROM? The one linked in the recovery article is gone.

Thanks
[Asus  Eee Pad Transformer Prime] imeysailors:
Hi, Well i'm back in canada now and have progressed a bit.

Heres where im at : s

Prevent brick - got as far as step 2 - generate wheelie blobs

got the following :-

Generating wheelie blobs..

Please 'ADB PULL /data/media/AndroidRoot'

Attempting to upload blobs

Failed to enable wifi Cancelling Error=65280

Done

Attempting to unmount data

Then nothing.

I did however seem to have the 7 files, so i continued with the ADB pull command which seemed to run ok.

Cant get into APX mode Power and volume + gives me nothing but black screen and i eventually have to hold power until reboot.

Help !

ok, in device manager i can see apx, but tablet does not show at all in computer, still shows only blue ray drive.

Also i just noticed that my bootloader version is v10.4.2.15 the small print confused me. All other version numbers are as per your list.

i've downloaded the correct version from asus, is it ok to install, and how do i do that ?

20 June

OK successfully flashed correct bootloader.

got into apx mode and ran wheelie code. got the following :-

[=] Chip UID: 0x15d07877453f009

[=] Incorrect BLOB selected. nverror: 0x4.

is it ok to rerun the generate wheelie blobs routine. im guessing the incorrect bootloader version caused a problem with the original generation ?

OK. Repeated Step 4 prevent Brick completely. All ran successfully !

Commencing step 5 , fingers crossed.

Spoke to soon !

Step 5 completed successfully.

Step 6 Bootloader - got as far as :-

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).

successfully, but :-

adb reboot-bootloader

failed to find tab.

computer fails to load device driver. trying to install MTP USB Device ?
[Asus  Eee Pad Transformer Prime] djibe89:
Did you wipe the system partition (or format to Ext4) using TWRP recovery ?
[Asus  Eee Pad Transformer Prime] djibe89:
New 4th version of the tutorial that brings TWRP 3.1.0-1 for your Transformer Prime.

If some directives are not clear in my tuto, plz help me to enhence it.
[Asus  Eee Pad Transformer Prime] imeysailors:
I tried your fix and downloaded the zip file from XTCrefugee, it contained android.winusb.inf file only, but as my computer cant see tab, i cant update driver in device manager !

my bootloader is now 10.6.1.27.1.

i've rebooted tab, it boots to androwook screen.

how do i proceed ?

* correction *

volume- plus power brings up rck etc. selecting rck gives androwook screen.

power button only to shut down cycles on again to AsUS screen with nvidia in bottom right.

Tab will not switch off.

can i unzip the djibe files onto my external micro sd card and run all on tab ?
[Asus  Eee Pad Transformer Prime] BENFARGO:
I followed this amazing tutorial step by step and installed directly Nougat 7.1, I spent hours ... :p, I had some problem to understand and get into n'vidia APX Mode... but now :

everything is perfect ! :victory: my TF201 is unrecognizable ! :good:

Thank you very much djibe89 !!! you're just great !! :good: Your tutorial is very clear and very useful !! :good:

(I must confess I'm proud of myself too ! :angel: ;))
[Asus  Eee Pad Transformer Prime] imeysailors:
TF201stock to Nougat 7.1

Just completed the upgrade and now have Nougat installed and, apparently working.

Had a few problems as I worked my way through the tutorial (understatement !), but with help and perseverance managed to work through them.

Many thanks for the excellent guide - any errors were all mine.

Did note a few problems that may or may not need resolution, and i'm too much of a newby to know, so, any advice welcomed.

1.	i was unable to load kang 3.1.0-1 as i could not view tab on pc.

instead i found kang 2.8.5.1 zip which i installed direct on tab, this allowed me to format correctly and proceed.

Do i still now need to load 3.1.0-1 ? And if so, how. Although my tab shows up on PC as TF201T, it is not seen by windows command, so is there a zipped version of Kang 3.2.0-1 that i can install directly on the tab ?

2.	When Katkiss was installing got the message :-

Checking for MD5 File.... Skipping Check..... No MD5 found

Is this important, and if so what do i need to do ?

3.	Where in Developer options do i set root access ?

i have scrolled through all the options and see no mention of root.

I susequently opened root access using supersu so was able to modify kernel settings.

4.	more info which may, or may not, be relevant.

when i volume- and power for recovery the top left screen message is :-

"key driver not found.... booting os

android cardhu-user bootloader <1.00e> released by "ww_epad-10.6.1.27.1-20130711"

starting fastboot usb download protocol"

is the "key driver not found" important, and if so is there a fix ?

I have pm'd djibe on the above, but i'm sure he's a busy man, and others on here may have the answers as well.

My TF201 is now a different machine, and i'm no longer considering throwing it for a newer tab, so for that many, many thanks !
[Asus  Eee Pad Transformer Prime] BENFARGO:
I read that I could not have GPS on TF201 with KatKiss 7.1 :(

Is it possible to downgrade the tablet to an android version which manages GPS ?

Thank you
[Asus  Eee Pad Transformer Prime] GCCC:
ok now

Thank you for replying. I got it working although /system is formatted as ext3 instead of 4. Does that matter?

I also found the response about tapping the Wifi icon at setup to avoid the initial Setup Wizard failure. So, I'm all set. This Rom worked well on my tf101 which spontaneously died a few wks ago (and was much easier to setup...)

---------- Post added at 11:18 PM ---------- Previous post was at 10:35 PM ----------

And I have ext4 instead of f2fs for /cache (f2fs only for /date). Should I in recovery change /cache format then wipe cache/davlik?
[Asus  Eee Pad Transformer Prime] djibe89:
GPS is working ;)
[Asus  Eee Pad Transformer Prime] djibe89:
Ext4 is the best read-only filesystem. Cool for system

F2fs is best for read-write. So cool for cache and data

However, to be sure you won't lose data, use Ext4 for Internal data partition.
[Asus  Eee Pad Transformer Prime] redondo77:
the tablet ever boot in recovery and ask my password

3 or 4 years ago I flash my tablet with the last rom (Kitkat 4.4)

I try flash with this rom but:

I do step 1 and 2

I skip step 3 (I unlocked my device 3 years ago)

In step 4 i flash flatline and reboot, but when i flash AndroidRoot the tablet don't power off

I reboot the tablet and generate wheelie blobs (but only 5 files)

then i skip this step and flash recovery2.6.3. (Yes, I don't read Only applies to stock bootloader V 10.4.2.18).

now, The tablet ever boot in recovery and ask me a password.

in the log i see:

Unable to find partition size for '/misc'

Unable to find partition size for '/staging'

Unable to find partition size for '/data'

Unable to find partition size for '/boot'

Unable to find partition size for '/recovery'

Updating partition details...

Unable to mount '/cache'

I can boot in fastboot if i write 'adb reboot-bootloader'

In fastboot i can run android, but when i reboot the tablet ever boot in recovery.

I try flash recovery (flatline and twrp 3.1.0-1) but A blue bar don't appears and the tablet freeze (in command line reports OK)

Any ideas?

Thank you very much for your help !
[Asus  Eee Pad Transformer Prime] Nektopoli:
What bootloader version are you running?

NP
[Asus  Eee Pad Transformer Prime] redondo77:
10.6.1.27.1

when i reboot in bootloader i see:

key driver not found.. Booting OS

android cardhu-user bootloader <1.00 e> released by "WW_epad-10.6.1.27.1-20130711" A03

Starting Fastboot USB dowload protocol
[Asus  Eee Pad Transformer Prime] Nektopoli:
You're on the correct bootloader for KANG's TWRP 3.1.0-1 see if you can wipe you TF201 and get a working TWRP on it by following the write up here;

http://xdaforums.com/showthread.php?t=2179759&page=2

NP
[Asus  Eee Pad Transformer Prime] redondo77:
Woooow !!!!

Thanks.

It's OK

After wipe my TF201 according to instructions I resume the guide in step 5

The tablet give me a error failed to mount /system but then i format this partition and continue

I finish the guide and the tablet works very well
[Asus  Eee Pad Transformer Prime] Fytdyh:
Does updating to Nougat makes it faster or less lagging ? I see lots of problems referring to updating from Jelly Bean to Lollipop/Nougat. Does it is worthy ? Noob user here. Also my tf201 has a problem when i connect to pc. Is such complicated worth it ?
[Asus  Eee Pad Transformer Prime] Nektopoli:
It will allow to use more current apps, if you want to run a more current ROM but don't want to go to 7.1 until it's more finished I'd go with 5.1.1 here;

https://xdaforums.com/transformer-prime/development/rom-katkiss-5-1-tf201-22-t3080892

Also when you connect the TF201 try every USB port some connect better than others.

NP
[Asus  Eee Pad Transformer Prime] djibe89:
Thanks for helping me to maintain the thread.

Hard to maintain many threads on XDA ;)

See ya
[Asus  Eee Pad Transformer Prime] Nektopoli:
NP, I bricked my TF twice and the advice I found here on the forums helped me unbrick it both times, so just paying it forward.

NP