yashsingh1/xdaforums huggingface dataset:
[Transformer TF300T General] markymark567:
Re: [GUIDE] Update/Recovery/Root/Downgrade Android 4.2.1 on Unlocked Devices

uhhh are you kidding???? read my post silly. i clarly stated that i was wondering IF we NEED to flash twrp 2.4.4.0 before doing anything. That is what sbdags said a few post back, and thats what i did and i wanted to know if it was truly needed and if so, the guide should say so, and if thats not the case then good to know. if your gonna try to flame someone at least read their post.
[Transformer TF300T General] nick1313:
Re: [GUIDE] Update/Recovery/Root/Downgrade Android 4.2.1 on Unlocked Devices

Don't think your point was as clear as you make it out to be, by reading your first sentence.

" OP, if we need to flash the patched twrp for 4.2 then i believe the tutorial needs to be MUCH more clear on that"

However reading a little further you do mention "before", as kind of an afterthought, so I apologize for not picking up on that. I think you could have been a little more clear in what your request was.

Also if you think that was flaming, sorry, definitely not what that was. I don't play those stupid games.
[Transformer TF300T General] markymark567:
Re: [GUIDE] Update/Recovery/Root/Downgrade Android 4.2.1 on Unlocked Devices

Alright man purely semantics then it seems. I see now how it may have been misleading... but to get back on topic and to the point at hand it seems flashing twrp before doing anything is not needed as some people have done it without. That was my main question and since ive heard some say you must and others you dont, i wanted to clarify the subject.
[Transformer TF300T General] williams2657:
Can't Flash CROM 4.0 Please help

I followed the directions of the OP but I am having issues getting CROM 4.0 to install. So far I have updated to Android 4.2.1 stock and installed TWRP 2.4.4.0 but when I try to install the CROM 4.0 using TWRP i select install --> i choose CROM 4.0 --> it looks like it tries initiate but then TWRP just restarts without warning and this just keeps happening. I came from using CROM 3.4.6 but I have already did a full wipe/factory reset so I am not sure what I am doing wrong here. Is my TWRP corrupted? I have reflashed TWRP 2.4.4.0 twice to see if it would resolve the issue but it did not solve my issue.
[Transformer TF300T General] markymark567:
Re: [GUIDE] Update/Recovery/Root/Downgrade Android 4.2.1 on Unlocked Devices

Bad download maybe? Re download cromi , check md5, try again... I dont think that would cause twrp to restart though... Hmmmm you are using the patched twrp from this thread right??

Also wipe data cache and dalvik before flashing (can't hurt)
[Transformer TF300T General] monkeygod:
Hi,

I tried the steps in -- Installing TWRP (Recovery) -- section and I keep getting <waiting for device> in the command prompt. Also noted whenever I boot up the device using Volume Down and Power, I keep getting "Key driver not found..Booting OS". I am trying to install TWRP to root my device since it's already got the 4.2.1 update recently OTA. Is there any other methods I could try to root device now? Thanks in advance.

Edit: After more searches, was able to fix the issue. It turned out it was Asus Sync. Install the program and reinstall the driver and it was able to pick it up. Rooting after that was pretty simple. A huge thanks again to joelalmeidaptg for the instructions and breakdown. I must say after doing all this, 4.2 is making rooting for the tf300 much more complicated than it should be. The process for the Galaxy Note 10.1 is much painless than this.
[Transformer TF300T General] tainka:
can you please post this recovery in img file? thanks!
[Transformer TF300T General] cmendonc2:
This should be stickyed, so many people are bricking because of not reading.
[Transformer TF300T General] sym95:
sending recovery

I am trying to install twrp but for the last 20 mins it has said;

sending 'recovery' <7500 KB>...
[Transformer TF300T General] ricco333:
check your usb cable connection, maybe move it to another usb port, also make sure you have properly installed the asus drivers, installing asus sync is a good way to make sure you have the latest drivers and don't plug the tablet in the PC before installing the drivers from asus.

Erik
[Transformer TF300T General] burt_ie:
Re: [GUIDE] Update/Recovery/Root/Downgrade Android 4.2.1 on Unlocked Devices

I'd also recommend changing USB port, and re - download the file again just in case it got corrupted somehow. After doing these two things it worked for me.
[Transformer TF300T General] kyokeun1234:
Re: [GUIDE] Update/Recovery/Root/Downgrade Android 4.2.1 on Unlocked Devices

Sometimes, USB connection goes haywire during transferring stuff. Try it again and if it doesn't work again, highly recommend you to change USB cable and /or re download the file.
[Transformer TF300T General] slickdaddy96:
Re: [GUIDE] Update/Recovery/Root/Downgrade Android 4.2.1 on Unlocked Devices

It took me trying three computers before I got it working. Had the same issue you had. Had all drivers installed correctly o each of them. The third computer with a USB 3.0 port worked. Don't know if that is significant or not. At first it didn't work either. I ended up rebooting my PC and the tablet and after doing that with it all connected to each other it just started working.
[Transformer TF300T General] WIIstpM:
by fastboot method I get error cannot load blob.. Do I need to extract only the updatelauncher.zip or the whole till i get the blob extracted?

NVM I read again :P

---------- Post added at 11:57 PM ---------- Previous post was at 11:17 PM ----------
[Transformer TF300T General] el estrago:
Having a bit of an issue let me run it down.

Running a stock rom/rooted(or was)/unlocked running Clockwork Recovery

my problem is that I followed method 2 flashed the update via fastboot and everything seemed to work fine-fastboot went through and said finished blue bar on tablet was completely filled-after doing the "fastboot reboot" my tablet wasn't rebooting so I figured that it was done just stuck kinda, so I reseted it manually held the power button. After doing so I booted it up and everything went through so I figured yay! but coming back to the home screen eevrything looked the same. I checked the firmware version and it still said 4.1.1 so I was confused what it did, come to find out it reversed my root.

So my device is now unrooted for some weird reason and still no 4.2 any help on this?

Edit: I tried doing the stock rom SD card OTA upsate and unzipped the file then placed the other unzipped file into an SD card but the damn thing doesn't want to read to it dont know why.
[Transformer TF300T General] -LaughingGor-:
My Asus TF300T running Android 4.1 with CleanROM, when i check Build Number for right ver of SKU i found: *Clean ROM WW Deodex*, i bought my tab at TW, then my right SKU is?

Sorry for my bad English, hope you understand it.
[Transformer TF300T General] pastorbob62:
WiFi doesn't work after I installed CleanROM 4.1

Not sure if this is the correct thread to ask this question. But -

I installed Clean ROM 4.1 successfully (I thought). Everything went well until I saw my WiFi was turned off. I attempted to turn it on without success. The Bluetooth is in the same state. They both worked on my stock setup (JB 4.2.1, bootloader 10.6.1.8) and I used TWRP 2.4.4.0 to flash it.

As I said, everything else works great. I did try to fix permissions from TWRP to no avail.

Help please! I don't want to have to return to stock. I can't ask this question on the developer thread since I am a noob.
[Transformer TF300T General] sbdags:
You might need to do a factory wipe from twrp.
[Transformer TF300T General] pastorbob62:
Re: Factory wipe. Please clarify

Just to clarify, I did wipe the Cache and Dalvik Cache. But you are saying I need to also wipe Factory Reset? Not System? Being a noob I want to be certain I understand.
[Transformer TF300T General] ricco333:
From the TWRP wipe menu, wipe Cache, Dalvik Cache, Factory Reset, and System. Then go back to the main page hit install and flash CleanRom 4.1 again. That's a clean flash.

Hope it helps.

Erik
[Transformer TF300T General] pastorbob62:
No Go

Well, thank you for the suggestions but it was no go. I wiped everything as suggested and even wiped the inrternal storage. Still no WiFi after installing CleanROM 4.1. I have spent most of the day trying different scenarios with no luck, so I am returning to stock JB 4.2.1.

Thank you your patience and help.

UPDATE - Well, I returned to JB 4.2.1 stock, with root and Superuser installed. Restored the backup I made before I began this failed journey and all is well now. It would have been nice to be able to benefit from all of the enhancements on CleanROM 4.1 but a tablet without WiFI is pretty much a brick as far as I am concerned. Maybe somebody will figure out what caused my problem.
[Transformer TF300T General] ricco333:
You can try and download CleanRom 4.1 again it could be that you have a bad download, CleanRom is a big file, I would try a fresh download and then flash it again.

Good luck

Erik
[Transformer TF300T General] pastorbob62:
Thank you but no thank you

I verified the MD5 checksum so the odds of it being a bad download are slim to none. Besides I have already returned to the original state and got everything back to where I like it. And the only thing that appeared to not work was WiFi and Bluetooth. Everything else that I could do without Wifi worked great. The odds of a bad download being that selective are not likely. But thank you for the suggestion.
[Transformer TF300T General] xSvenHD:
Do i first need to update my twrp to the newest version and than update to stock 4.2.1? Or first update to stock 4.2.1?
[Transformer TF300T General] nick1313:
Did you download it on PC or tablet? The rom that is?

Never hurts to download it again and try.
[Transformer TF300T General] ricco333:
You don't need to have the latest TWRP recovery in order to flash 4.2.1, once you flash Asus 4.2.1 it will re-partition everything and you will lose your recovery, just make sure that you read carefully the OP and flash the correct patched TWRP recovery once you have completed the Asus 4.2.1 installation.

Erik
[Transformer TF300T General] vinnong:
Current i'm running on cleanROM 3.4.4 and i'm quite confusing in SKU which i should use for upgrading.

Setting>about>build no is WW (due to CleanROM is based on WW version)

bootloader is TW_epad-10.4.2.13

please advice. thanks.
[Transformer TF300T General] sbdags:
Your sku is TW
[Transformer TF300T General] pastorbob62:
SUCCESS!

I finally found some time to try again. After downloading the ROM again, from stock setup with TWRP installed I wiped everything, including the internal storage and flashed CROM and TADA! I am now the proud user of CROM 4.1 and I am very pleased with the speed and response of my tablet. Not that it was a snail previously mind you, but it is even faster.

I am not sure if the difference was the fresh download or the fact that I did the full wipe from stock. Previously I had wiped from my failed CROM atempt before reflashing and it had still failed. I read on another thread that it is best to reflash to stock and then flash to the desired custom ROM, so since I was already on stock, it was worth a try with the fresh download.

Whichever it may be I am up and running. Thanks to all who made suggestions.
[Transformer TF300T General] joelalmeidaptg:
TWRP 2.5.0.0 just went out . I don't recommend to update at this moment since it isn't confirmed to work yet. Don't flash if you don't want to brick your tablet!! Once I get a confirmed to work version of the recovery for this bootloader I will update the main thread
[Transformer TF300T General] robgee789:
Cheers mate I was thinking about updating but I'll hold off for the all clear :)
[Transformer TF300T General] jazzmans:
I'm sorry, I'm confused

I'm sorry but I'm confused. On Samsungs site, there's a whole list of android build versions TT, WW, US, etc.

but my build shows as cm_tf300t-userdebug 4.0.4 IMM76L eng.jenkins.20120717.031011 test-keys.

I'm running Cyanogenmod 9, version 9-20120717-NIGHTLY-tf300t

(long story short, I screwed up in december and installed CM 10 while I'm still using the 4.1 bootloader, and it froze, finally fixed the bugger today.)

Which version of Stock ASUS should I download, and do I have to use ADB (or in other words, hook it up to a computer) to update/upgrade to jellybean?

Thanks, I know it's a fairly stupid question(s) but the last thing I want to do is soft-brick the damn thing again.
[Transformer TF300T General] corrado85:
i made a big boo boo :crying:

i wiped all data from my internal storage. now the custom rom is gone, my stock rom is formatted as well so i dont have a OS anymore.

I put custom rom onto my 4gb sd card but TRWP is unable to recognize it..

is it bricked?
[Transformer TF300T General] f69m:
Can you connect with ADB, while TWRP is running?

Usually "adb push" should work with TWRP.

You can use it to transfer your custom ROM and then TWRP should find it.

Another option is to use ADB sideload. That is under "Advanced" in TWRP 2.4.4.
[Transformer TF300T General] Rhian:
I assume you meant Asus and not Samsung... :)

---Edit---

I just thought of another way to try and figure out your build version. This takes a little time and the resulting file is big (5mb), but the answer is at the top.

Step 1) hook up your booted up Pad to your PC

Step 2) use: adb devices to ensure you're connected (you should see your normally readable serial no.)

Step 3) use: adb bugreport > mybugreport.txt

Then use Notepad or something similar to look at your "mybugreport.txt"

It should show near the top:

Build: TF300 CROMi-Xenogenesis 4.2 - 10.6.1.8/WW DEODEX

Build fingerprint: 'asus/WW_epad/TF300T:4.2.1/JOP40D/WW_epad-10.6.1.8-20130225:user/release-keys'

If that doesn't work, another indication is the region you bought it. Unless it's a grey-imported device, yours probably corresponds with where you are. US, JP (Japan), TW (Taiwan), CN (China), WW (rest of World).

At least that is my understanding of how the SKU's work.

If you still have its box, you may also find your SKU listed there. Mine is a WW and has it listed both at the WiFi compatibility codes "CB_802.11bgn(AS)_WW+BT3.0" as well as an item marked "Android WW". However I don't know for certain if this is any indication...

Further more, as mentioned in the OP, you need to be STOCK ROM before attempting the steps. What you need to do is getting back to stock from your currently installed ROM.

Steps for that are outlined here (but you do need to have your correct SKU): [HOW-TO] Upgrade or Downgrade to any stock JB Firmware
[Transformer TF300T General] joelalmeidaptg:
Updated the main thread. Now it contains more info for Locked and Unlocked bootloaders, including the new root method ;)
[Transformer TF300T General] corrado85:
could you guide me what should i put in command prompt?

I enabled ADB Sideload in TWRP

Then I typed "adb push rom.zip" (rom located in same folder)

didn't work..
[Transformer TF300T General] f69m:
Right, after activating sideload mode in TWRP, "push" will no longer work.

Instead use "adb sideload rom.zip".

This will first transfer the ROM to something like "/sdcard/sideload.zip" and then flash it.

On Linux might be necessary to run as root for permissions: "sudo adb sideload rom.zip".

Not sure about Windows.
[Transformer TF300T General] d08speed3:
I'm confused on what Asus firmware I download? Lol
[Transformer TF300T General] d08speed3:
Let's say I update to 4.2.1 using fastboot method, will it erase my my current clean ROM 4.1.1 setup? If not....once I install the new recovery can I make a backup of my 4.1.1 clean ROM using the new recovery and load it back if I don't like clean ROM 4.2.1?
[Transformer TF300T General] Rhian:
Erase the setup? As in the data partition? No, but it will most likely be very messy. It's with good reason that when flashing different ROMs you are always advised to do a full wipe. You're talking about going from CleanROM 4.1.1 to 4.2.1 which sounds odd, the previous post with your picture says CleanROM 3.4.6 (based on FW for JB 4.1.1, the 10.4.2.25 is TF700, I believe, comparable with 10.4.2.20 for TF300T.)

So in essence you want to try CleanROM 4.2? You will probably need to follow the steps below (for installing/upgrading Stock Roms) and then you can try the CleanROM 4.2. Keep in mind that you do need to do a full wipe and can only restore your stuff with a program like Titanium Backup. (I do recommend doing a backup of your internal storage too!)

Doing a nandroid backup (with TWRP) and restoring it on a different firmware (which is what you are asking) will result in very unpredictable behaviour and in the worst case could brick your pad. There are file system differences between 10.4.2.20 and 10.6.1.8 to enable multi-user in JB 4.2.1!

There is a big fat warning at the top of the post for [ROM]★●[4.2.1][CROMi-Xenogenesis 4.2][Asus - 10.6.1.8 - DEODEX][Apr 7]★●:

FW 10.4.2.20 (Stock from Asus!) is JB 4.1.1 for the TF300 which I would install first before going to the 10.6.1.8 (is JB 4.2.1, again from Asus!), then once on 10.6.1.8 flash CleanRom 4.2. In my view/experience, this is the safest way to go.

Going back is the other way round using the downgrade thread, although I guess you can skip reflashing stock 10.6.1.8 and go straight for the 10.4.2.20 (which isn't entirely without risk), then restore your Nandroid backup of CleanROM 3.4.6.

Don't ignore the issues of the differences between 10.4.2.20 and 10.6.1.8 mentioned all over the forum. So keep that in mind before hopping between the two.

Also keep in mind that you do need the special TWRP version for the 10.6.1.8 FW (JB 4.2.1).
[Transformer TF300T General] d08speed3:
Cool thanks. So for the Asus firmware I download the "US" sku version? I HAVE revert back to stock 4.1.1? Can't I just use the fastboot method and upgrade to 4.2.1 on how I'm setup now?
[Transformer TF300T General] Rhian:
If your SKU is "US" for North America (US/Canada) then yes, you need that one.

I do not know the effects of going straight to Stock 4.2.1 from CleanROM 3.4.6, it could screw up your device, but it could work as well. It's unknown territory for me, I have used the safe route through stock ROMs.
[Transformer TF300T General] Hammerhand.17:
I had the drivers installed and working with previous version of the bootloader, but now I have updated to 4.2.1 (to be able to install cROMI 4.2) and when I reboot to fastboot (to install TWRP), windows (7 x64) doesn't recognize the device. I follow the instructions to re-install the drivers, but I get this errors:

And there is no way to recognize the tablet. Can anybody help me?
[Transformer TF300T General] Rhian:
I don't know which drivers you are trying to use. I think mine got picked up from the latest ASUS PC Sync (V1.0.96), or Asus Suite. I uninstalled both afterwards, but the drivers are kept by Windows. Check the Asus support site for these utilities, the PC Sync one can be found under OS Android. :laugh:
[Transformer TF300T General] Hammerhand.17:
I have try to install the asus pc sync, and close it in the windows bar, and it didn't work, and neither with the android naked drivers. I've tried to install in a windows xp system, and I can install them, but it says that "asus eee pad drivers" can't start.

My bootloader was unlocked with v7, I am trying to use v8 (I think this is not necessary, but I am trying), and it says network error.

No solution yet.

EDIT: Just to make sure. I have to power off the tablet. Then power on pushing vol- and power. It appears three icons (RCK, android, wipe data), Have I to do anything? Up the screen appears "Starting Fastboot USB download protocol".
[Transformer TF300T General] Rhian:
No, no need to do anything when you see that. You are in fastboot bootloader now. The command "fastboot devices" should work, if your drivers are okay.

I'm not sure if this is helping, but I know it did for my phone and I made a habit of it for the tablet too.

If you are still able to boot into your OS, go to Settings, About Tablet, Developers options and enable USB debugging. That might help too. (If the developers options don't show, go to About Tablet, tap 7 times or so on the Build (you will start to see a message that you are x steps away from becoming a developer) and you can go into Developer options).
[Transformer TF300T General] Hammerhand.17:
Yes, the tablet boots normally, and I have enabled the usb debugging too, but windows still can't use the fastboot drivers. It seems like the tablet's fastboot doesn't appears like a android fastboot to windows, no matter what I do.

edit: mmm just seen: the tablet screen shows: "key driver not found.. Booting OS". I think this is the problem, I'm going to search a solution.
[Transformer TF300T General] Rhian:
Try these drivers for fastboot? The message you got doesn't seem hopeful though.
[Transformer TF300T General] Hammerhand.17:
I tried them already, and didn't work. I am almost sure that the problem is that key driver lost. So I am going to try to reinstall the firmware. If I put the original firmware on the SD, as it is not an update (it's the same firmware that I have, I recieve no message of update. If I put the 10.4.2.20 firmware I recieve the message, but I will brick the pad, I think. Am I wrong?

I am downloading the 10.6.1.8.1 firmware from China, I can update to this, right?

Edit: Just tried to update. The tablet recognize the update, but when ir restart, it doesn't update (it says it is not compatible with my actual firmware (it's ww). how can I make it compatible or reflash 10.6.1.8 from CN?
[Transformer TF300T General] Rhian:
You do need the SKU version "WW" of the 10.4.2.20 and that will do a downgrade if you boot in 4.2.1, see my post here:

http://xdaforums.com/showpost.php?p=40024737&postcount=39

Addition:

The message "Key driver not found... Booting OS, then Android cardhu-user...." is normal when booting into the bootloader.
[Transformer TF300T General] Hammerhand.17:
Ok, gonna try to downgrade and see if that works. If it works, I will update via bootloader + update twrp before rebooting, so I have TWRP recovery installed and 4.2.1. Let's see.

Edit: not working, no matter what version I install in the tablet (10.4.2.18, 10.4.2.20, 10.6.1.8), the pc is unable to detect bootloader mode. The drivers seems to work perfectly with adb and with apx mode, but every time I start bootloader mode, it is not recognized, it seems that the tablet doesn't send a signal to the pc to say "I am fastboot" (sorry if I am not expressing correctly, I hope you understand me).

I've tried in various versions of windows, now I am going to try in a virtual machine with linux. I will inform.

SOLVED: I installed linux mint with vmware, but couldn't make fastboot work, BUT once I close the virtual machine, windows automatically recognized the tablet fastboot, so I could install the patched TWRP and then backup & install cROMI 4.3b4. I hope it serves for anybody having the same problem.
[Transformer TF300T General] Nekromantik:
edit: gave up on sideload and used microsd card.
[Transformer TF300T General] Kaptinkrunk:
can i downgrade from 10.6.1.8 us locked?
[Transformer TF300T General] Rhian:
I gave the answer about that a few posts back... This is something you could have easily found using search or even reading a bit back...

In your case the SKU needs to be US of course.

Sent from my lap using an amazing android device :)
[Transformer TF300T General] aerdely:
The source code for 10.6.1.8 is posted on asustek website finally. Although it says 10.6.1.8.4

Link

http://support.asus.com/download.as...300T&p=28&s=1&os=32&hashedid=8BmzkQ4yoz5WzBrW
[Transformer TF300T General] Primokorn:
If we are on AOKP 4.2.2 at the moment and we want to go back to 4.2 stock firmware, we just have to flash Asus firmware via Fastboot or TWRP recovery?

The current TWRP recovery will remain?

Thanks.
[Transformer TF300T General] joelalmeidaptg:
Guys, don't try to install the 2.5.0.0 for 4.2 version. The guy must have mixed up TF700T with TF300T. Look what I got:

I will update the guide as soon as I get a working 2.5 TWRP ;) I sent a PM to the developer, hoping to get a answer soon :)