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

Go to keyboard settings.

U need to make a cross there.

Sorry,i was too late. :)

Gesendet von meinem GT-I9100 mit Tapatalk 2
[Transformer TF300T General] joelalmeidaptg:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

At the beginning I couldn't take photos too, but it is working now. I/O is reallybad thow
[Transformer TF300T General] hgoldner:
So you did the update, per your OP by completely wiping the device and "starting over." I'm wondering whether those who are experiencing problems with HDMI, I/O, etc. also updated this way.

So I also wonder whether the "update" was designed to be a completely NEW install or a "flash-over." If the latter, that might explain the issues you're reporting.

I'd like to know whether anyone complaining of HDMI, BT or other "bugs" updated via flashover (i.e. Joel's options 1 or 2 in the OP).
[Transformer TF300T General] nick1313:
I had some issues with bluetooth last night and did a "flashover", I don't have an HDMI cable so I can't test that.

The issues I had was, I was trying to skype with someone and it wouldn't stay connected to the headset or if it would it would be really distorted. Maybe I'll try a fresh install this weekend. Need to back up all my stuff though.

I might just wait for roms to come out and then wipe everything and flash the roms.

EDIT: I will have to say though, I was on a completely stock unrooted rom when I did it. The only thing that I didn't wipe was internal sd card, so that could definitely be a problem.
[Transformer TF300T General] kyokeun1234:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

Bluetooth issue is fault of Google and Android, not Asus. I also believe there is a problem with HDMI support in 4.2.
[Transformer TF300T General] nick1313:
Do you have any info on that? Why do you say it's Google and Androids fault?
[Transformer TF300T General] joelalmeidaptg:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

The ones with Bluetooth issues, please try to fix permissions on recovery ,test it and report back here
[Transformer TF300T General] kyokeun1234:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

My Nexus 4 also has serious Bluetooth issue and people are reporting that HDMI doesn't work properly on Nexus 10. You can also Google "Android 4.2 Bluetooth/HDMI issue" to confirm it.
[Transformer TF300T General] joelalmeidaptg:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

There where a lot of issues regarding Wi-Fi, Bluetooth and hdmi regarding Android 4.2.1 that were fixed on 4.2.2. But I think Asus got over them. Please try to fix permissions and see if Bluetooth works. I don't have my tablet with me at the moment and I didn't test my Bluetooth yet
[Transformer TF300T General] nick1313:
Gotcha...Ok thanks.

BTW, I wasn't doubting you, just hadn't heard of it yet because this is the first device I've had with 4.2. I'll look up some stuff.

I'll try the fix perms thing and if that doesn't work I might try a fresh start this weekend. It's not too big of a deal with me, because I don't use it too much.
[Transformer TF300T General] tjk639:
Which method has had the best luck? I'm leaning towards the second one, but if method three had better results I am okay with making TI backups.
[Transformer TF300T General] elesbb:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

Yep, no issues here with anything. I remember reading those issues were only related to Nexus devices who only had Google to solve things. We have google and Asus to sort things out for us :)
[Transformer TF300T General] theMasterplan84:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

I used method 3 and had no issues what so ever
[Transformer TF300T General] joelalmeidaptg:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

Ok, just tested here and bluetooth is working fine.
[Transformer TF300T General] funnel71:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

I used the equivelant of method 3, but it says you will lose your data. You won't. Just don't wipe the data partition. You can wipe cache though. The only thing you lose that way is root and recovery, but that's temporary. You can put it right back.

BT and WiFi work just fine. I found that BT took a little while to repair with my keyboard but all went well once out did pair.
[Transformer TF300T General] hgoldner:
Yeah, looked at the support requests and they suggested that BT was knocking wifi out on the Nexus devices. I haven't heard that report from anyone on a TF300. Not sure what the HDMI issue is, but I'm inclined to use method 2 over the weekend to step up to 4.2.1.
[Transformer TF300T General] ricco333:
I am currently running Surdu's CM10.1 build, if I want to update to ASUS 4.2 release do you guys think that method 3 is the best way to go? Has anyone here upgraded from CM10.1 to ASUS 4.2?

Thanks for the writeup, very nice.

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

Just to confirm.

I got the update on 4.2.1 over the air.(automatically)

I unlocked the tablet (on startup I have in the top lef corner 'Device is unlocked') with the tools from asus site but with unlock tool for 4.1

So I just need to install TWRP recovery and later on I need to root the phone?
[Transformer TF300T General] y2kardell:
Flashing Recovery

With the fastboot method, I keep getting : FAILED <command write failed> <unknown error>>.

Any ideas?
[Transformer TF300T General] kyokeun1234:
I used method 3 and I think it's better to be honest. I'm also from CM10.1 BTW.

Also if you're not comfortable with wiping your internal data, it's not necessary to wipe internal. I just factory reset my tab and followed the instruction. Works fine for me.

OP: Nice work on the instruction! Much easier to follow and such!
[Transformer TF300T General] funnel71:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

Yes, install the special twrp in this guide and then you can flash root.
[Transformer TF300T General] joelalmeidaptg:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

yup ˆˆ but you should have used the unlock tool for 4.2... But if you see "Device is unlocked" you should be OK

Maybe you are doing something wrong... Check the instructions I gave. Or try another method.

EDIT: I updated method three, teaching how to do it without wiping user data ;)
[Transformer TF300T General] tjk639:
Did method 2 and it worked just fine.
[Transformer TF300T General] Erckul:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

any way to fix the DRM issue for Google video? I've tried a few apk files, vodoo rootkeeper, etc. and nothing seems to work.
[Transformer TF300T General] chadcspencer:
TWRP 2.4.4.0 install using a terminal emulator

Hi all,

If flash using my current TWRP 2.4.4.0 it's my understand from reading here that I will after reboot have lost my custom recovery (aka TWRP 2.4.4.0) but that when re-installed using fastboot method it will write to the correct place and work again. Now my question is can i re-install TWRP 2.4.4.0 using the terminal emulator method? I use a emulator on my tablet, and this is how I always have pushed recoveries. The following is the commands I use.

su

dd if=/sdcard/twrp.blob of=/dev/block/mmcblk0p4

Then reboot to complete installation.

Does anyone know if this method will work after 4.2 is install?

EDIT:

I can see one problem right away.... I have to use the "SU" command first, and I will not have superuser yet:(
[Transformer TF300T General] Erckul:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

once you have Superuser working, the terminal emulator method to reinstall works well. That is the method that I used.
[Transformer TF300T General] funnel71:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

So the ultimate answer is yes you can use the terminal, but not in this case because you will have lost root, so flash tarp with fastboot then flash root using twrp.
[Transformer TF300T General] aerdely:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

I know this is kinda a long stretch probably not possible at current time but was wondering if there were any plan or any way to get root access without pc. I know it either requires su permissions or flashing recovery to get su but don't have a pc at current time would like to root. I have unlocked bootloader of course but as for rooting doesn't seem to be a way to do it without fastboot not sure if there is a process being worked on. Like said probably stupid question but just putting it out there.

Also not sure if the unlock tool can be modified or in some way used to gain root but probably would of been thought of if could.
[Transformer TF300T General] hgoldner:
Probably not. Unlike many Android handsets and tablets, there does not appear to be a way to "flash" a recovery via the bootloader (for instance with a Rezound you can create a PH98IMG.ZIP file to flash in bootloader that can update kernels, splash screens, and recoveries, so you don't need to be connected to a PC as long as you can get the files on the handset). On the Transformer, it appears that flashing a custom recovery requires fastboot.
[Transformer TF300T General] aerdely:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

Ah ok yea had many in passed where that was possible usually was an htc but was just putting it out there. Asus is a good device love it but seem to have it buttoned up pretty good besides letting us unl0ck the bootloader unless being able to use fastboot. Wont be a problem in couple weeks will have access to a pc but just hoping. Sort of held off on asking because on how new the update was just monitoring to see if something popped up. Thanks for info though. Jusst gonna have to try to get access to a pc then.
[Transformer TF300T General] dymndback:
What should the permissions be?
[Transformer TF300T General] Erckul:
you are correct. you must use a computer to obtain SU. after that just make sure that you INSTALL THE PATCHED VERSION OF TWRP, which can be found in the OP. It is #3 under INSTALLING TWRP RECOVERY
[Transformer TF300T General] ricco333:
boot into TWRP recovery, select advanced, fix permissions, then reboot.

Erik
[Transformer TF300T General] Samsung.Galaxy.S3:
Unlocked and rooted!! Thanks for a great set of instructions! Worked perfectly. Now onward to go peek at the ROMs...
[Transformer TF300T General] kyokeun1234:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

Theres a fix permission setting in twrp under advanced I believe. It's not literally fixing root permission or anything like that :p
[Transformer TF300T General] funnel71:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

Could you, or someone, advise exactly what permissions it fixes? I have everything working, just curious if this would be more of an improvement.
[Transformer TF300T General] kyokeun1234:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

If everything is working, I wouldn't fix permissions. But if you want to know, just Google search :p

To be honest, I don't exactly know either lol.
[Transformer TF300T General] joelalmeidaptg:
Linux filesystems have specific permissions, for security reasons. Sometimes if a permission is wrong, you won't get access to a file. Fix permissions will fix that for you
[Transformer TF300T General] kyokeun1234:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

Well everyday is a school day :p

Thanks!!
[Transformer TF300T General] dymndback:
Duh... I should've remembered to do that from my time rooting and flashing my old droid2. ;) Thanks for the reminder.

So I did that, but my tablet still doesn't see my ps3 controller. It works fine plugged in, but no wireless connectivity.

Since I'm rooted, decided to go with sixaxis app. Now I have wireless again, yeah.

---------- Post added at 06:48 PM ---------- Previous post was at 06:03 PM ----------

TWRP recovery is not recognizing my sd card. Any thoughts?
[Transformer TF300T General] kyokeun1234:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

you gotta mount external storage and then change it so that you are looking at external storage, not internal. TWRP should have no problem reading external storage. At least I had no problem.
[Transformer TF300T General] hcoling:
Every worked fine after upgrade, installed custom recovery, root. Only a few apps stop working because of Link2SD I'm guessing. Only needed to re-install and now everything is fine. Very nice updates. Thanks!
[Transformer TF300T General] dymndback:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

So I've tried that, but it keeps jumping back to internal storage. Log says "failure to mount"
[Transformer TF300T General] pjc21:
Your not alone here dymndback, I have the same issue with external sd not mounting. It will mount fine in andoid and on pc.

I have been looking into it but no luck yet.
[Transformer TF300T General] wirikidor:
Thanks

I am one of those people who downloaded the OTA to 4.2.1 and then tried to root... the V7 unlocker worked for me but I couldn't install a recovery that could read the internal storage.

Anyway, your patched twrp.blob is exactly what I needed, after that I was able to install root and all is well with the world. Thanks. :good:
[Transformer TF300T General] kyokeun1234:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

That's really odd since TWRP read mine fine...
[Transformer TF300T General] Godfather13:
Hello all,

I am currently running Hydro Rom with twrp 2.4.3.0, I would like to update to 4.2.1 and I am little confused on the method 3.

Can I flash directly with my actual twrp 2.4.3.0 or should I update it before to 2.4.4.0 JB and reinstall it again after flashing 4.2.1 ?

Thank you for your help !!

---------------------------------

ok just updated to twrp 2.4.4.0 JB before => flash zip => as I performed a factory reset it says no OS installed => nevermind reboot and now it's ok 4.2.1 :)
[Transformer TF300T General] charly0188:
So?

Hi everybody!

So I am no running the 4.2.1 update so the new bootloader too... Here is my question if I follow the process described here and flash twrp I should have a working recovery. But then can I just flash cm10.1? The bootloader won't be change ? So will it be possible to use the recovery integrated in cm10.1 kernel?

Thanks for your answers!
[Transformer TF300T General] kyokeun1234:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

As far as I know, cm uses 4.1 bootloader so I think you'll soft brick your tablet when flashing cm while having 4.2 bootloader.
[Transformer TF300T General] charly0188:
Thanks for your quick answer! It prevented me from trying something stupid.

So I guess the only way now is to wait or downgrade the bootloader ...not sur the second option is possible
[Transformer TF300T General] urla:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

Does somebody has a problem after rooting? I have a problem after sleep mode (few hours) when I unlock the device touch did not respond very well. First 1-2 minutes I click something device open something else..
[Transformer TF300T General] Langduscher:
If I really wish I can "downgrade" by flashing the blob from the 4.1 firmware, right?
[Transformer TF300T General] omarperoni:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

I have a question , i have 68 game on my TF300T i lost all data game with this upgrade or not, sorry for my bad english. I'm speak Spanish. My tablet is unblocked and root 4.1.1
[Transformer TF300T General] kyokeun1234:
Flashing 4.2 will not wipe the data, but if you don't wipe data and flash it (dirty flash), you might get random reboots often and your tablet probably won't be as smooth and buttery. What I would recommend you doing is that you should backup all your app data using Carbon or Titanium Backup and just wipe the data. I did this and I'm satisfied with it.
[Transformer TF300T General] omarperoni:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

Ok I'm tried now thanks. The update is good or not all funtion work fine but example... Bluetooth, wifi, etc...

---------- Post added at 10:08 PM ---------- Previous post was at 09:41 PM ----------

which method would be good for me if I have my tablet is root and unblocked.
[Transformer TF300T General] kyokeun1234:
Method 3 will be recommended by me. If you're comfortable with fastboot, that wouldn't be so bad either.
[Transformer TF300T General] omarperoni:
Thanks

Thanks joelalmeidaptg and kyokeun1234 my friends i have my TF300T on 4.2.1 and root wow :highfive: and now restored all of my backup uuffff :eek:
[Transformer TF300T General] kyokeun1234:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

Glad everything went ok :)
[Transformer TF300T General] joelalmeidaptg:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

I'm glad to help ˆˆ
[Transformer TF300T General] omarperoni:
Help me please

I have a small problem with applications External 2 Internal. I worked perfect with version 4.1.1 but nowwith the upgrade 4.2.1 does not work and I have my backup on the sd card. any help please I can not retrieve all my games and start from scratch is not easy.
[Transformer TF300T General] kyokeun1234:
Probably compatibility issue from the app itself. I'm sorry to hear that. What I would recommend you do is contact the developer of the app.
[Transformer TF300T General] rjnagy:
TWRP and Root

I had issues with this also. I have TWRP touch 2.4.4 and downloaded image from asus. I wound up having to use fastboot to load the update TWRP is having issues seeing anything. In fact I was hoping to reroot last night with superuser 3.2. Problem is I can't get TWRP touch to find the zip anywhere.:confused: so we have conflicting stories here. I like the twrp interface but like I said I can't get to see any zips.
[Transformer TF300T General] nick1313:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

I had that problem as well until I rebooted the tablet into my Rom and then rebooted to recovery. Which sdcard are you putting it on?
[Transformer TF300T General] rjnagy:
TWRP issue

Nick give a few I am trying the patched twrp that is here earlier in the thread. I needed to reboot my server quick as I was doing something else..

I do really believe it is something in 2.4.4 and will confirm that here in a couple minutes. In fact I had did a completely clean install of everything so I shouldn't have had any issues. I will report what I find in a couple minutes.

Ric

---------- Post added at 12:26 PM ---------- Previous post was at 12:21 PM ----------

Definitely at the moment seems to be something with whats in the current 2.4.4 file on the twrp website. I used the patched one and I could see everything and flashed the superuser zip in a matter of seconds. I am rebooting the tab now to check and make sure superuser took.

Ric
[Transformer TF300T General] nick1313:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

Ahh, yes I'm on that twrp as well, patched one.
[Transformer TF300T General] rjnagy:
TWRP 2.4.4.0

Just flashed Superuser 3.2 RC3. Here is the thing...that's the second time flashing it.....first time while it said successful it seemed to not take. One of the following happened and I will confirm that.

1) First time I just copied the patched twrp and it said successful but when I went in Titanium Backup said it could not acquire "su". So after the flash either you have to clear the cache/davlik or you can't just use the patched twrp image maybe you have to use everything in that folder.

2) The second could be there is a newer version of superuser I don't have

Ric

---------- Post added at 12:46 PM ---------- Previous post was at 12:37 PM ----------

This has been one of my more interesting flashes. Just a silly question and maybe i'm wrong. I could have sworn this update was 4.2.2 but if you go into settings the Asus rom still has it as 4.2.1. Am I wrong on the version and imagining it or what?
[Transformer TF300T General] nick1313:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

I used everything from the OP. No its only 4.2.1
[Transformer TF300T General] rjnagy:
Latest Image, TWRP, and Root

Just booted back in tried to launch Titanium Backup Root Pro still says cannot acquire su.

I am going to try a couple things at this point

Reload Chainfire SuperUser

Reload Titanium

If that doesn't work copy the entire folder from the thread earlier in the post and run the superuser flash again.

At that point if it doesn't work I am assuming that it is either the version of superuser or where I am flashing it from on the sdcard.

Ric

---------- Post added at 01:01 PM ---------- Previous post was at 12:50 PM ----------

Just downloaded SuperSu 1.25 and will try that I have been using the superuser 3.2 for so long. So we'll see what happens
[Transformer TF300T General] robgee789:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

hey guys im running cromi with a custom kernal, do i have to worry about the custom kernal or can i just straight flash the 4.2.1 from asus?
[Transformer TF300T General] rjnagy:
TWRP

So with all my experimenting here is what I can say I think definitively for anyone having problems.

You need to use the patched TWRP which can be found in this thread

You also need to use SuperSU v.1.25 which a link can also be found here in this thread.

I am now on a Rooted Stock Asus as they call it 4.2.1

Ric

---------- Post added at 01:21 PM ---------- Previous post was at 01:19 PM ----------

Yeah no...lol..it's so hard to keep these versions straight between Google, the Vendors, and the custom roms...sighs...its cool though I have my root back.
[Transformer TF300T General] funnel71:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

I tried superuser first, and that didn't work. Supersu 1.25 worked nice, and it will remove anything superuser put on which is nice to keep things clean.
[Transformer TF300T General] joelalmeidaptg:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

No you don't . The Asus update will flash one for you ;)
[Transformer TF300T General] robgee789:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

Cheers mate I thought so but I didn't want to risk it without checking lol
[Transformer TF300T General] chadcspencer:
NO OS!

I just unzipped the Zip from Asus called EP201_768_SDUPDATE.zip and went into TWRP 2.4.4.0 on my tablet wiped Systme, data, cashe, dalvik and flashed the zip. Once it was done and I started to reboot, it said Are you sure you want to reboot? there is NO OS. So I don't know if this was a bad zip or what. Any clues. I'm currently running a restoring a backup and hoping it works.

UPDATE:

Did a restore, and then when I reboot it completed the install of 4.2.1. GRRRR so now it's trying to boot but I had restored the all the files that should have been wiped. It will be interesting if it completes the boot. if so I will work on fastbooting and getting TWRP installed and trying to do it right this time.
[Transformer TF300T General] nick1313:
Try it by not wiping system. I had that happen to me when I was updating a previous ICS version doing the same method you did. I redid it without wiping system and it worked.
[Transformer TF300T General] chadcspencer:
Well, it was a weird way to get here but I got it, then fastboot'ed TWRP, and got root. I'm restoring my backup apps now. I thought I bombed it for a little bit. it actually did boot up with the restored system folder and then the update on top of it, but had some errors. I did a factory reset, just to be sure I didn't have any old mixed in with the new. All seems smooth
[Transformer TF300T General] tjk639:
Are there any custom kernels that will work on this new build?
[Transformer TF300T General] joelalmeidaptg:
Re: [GUIDE] Update/Recovery/Root Android 4.2.1 on Unlocked Devices

No, not yet...