[Q] Currently on Cromi 3.4.1 (Android 4.1). How to move on? - Asus Transformer TF700

A while back I installed TWRP and Cromi version 3.4.1-10.4.4.25/US DEODEX. My tablet has gotten infuriatingly slow and I think its time to move onto a newer and better rom. I wanted to try out the 4.3 Cyanogen Rom, but the requirements are to be on the asus 4.2.2 bootloader. How can I go about updating the bootloader. Do I have to revert to stock first? What process should I follow? Thanks guys!

Izviral said:
A while back I installed TWRP and Cromi version 3.4.1-10.4.4.25/US DEODEX. My tablet has gotten infuriatingly slow and I think its time to move onto a newer and better rom. I wanted to try out the 4.3 Cyanogen Rom, but the requirements are to be on the asus 4.2.2 bootloader. How can I go about updating the bootloader. Do I have to revert to stock first? What process should I follow? Thanks guys!
Click to expand...
Click to collapse
The safest method is to download the latest firmware from asus extract it and flash the .zip with trwp, from here it will overwrite twrp after you reboot so set up android 4.2 and then reboot go into fastboot and fastboot flash twrp 2.5 from there you can flash what ever 4.2 rom/kernel you desire

Izviral said:
A while back I installed TWRP and Cromi version 3.4.1-10.4.4.25/US DEODEX. My tablet has gotten infuriatingly slow and I think its time to move onto a newer and better rom. I wanted to try out the 4.3 Cyanogen Rom, but the requirements are to be on the asus 4.2.2 bootloader. How can I go about updating the bootloader. Do I have to revert to stock first? What process should I follow? Thanks guys!
Click to expand...
Click to collapse
If you liked Cromi, you will love CROMi-X, the JB 4.2 based successor to Cromi roms.
Boot into TWRP and make a nandroid backup - just in case.
Backup your files, pics, videos to your PC or a SD card - just in case.
Go to the CROMi-X thread, download the 10.6.1.14.8 bootloader/TWRP 2.5 package, flash it and boot back into your old Cromi rom once.
Boot back into TWRP (which should be 2.5 at this point), choose 'Wipe', swipe to do a factory reset (highly recommended if you move from 4.1 to 4.2 since 4.2 file system is quite different from 4.1)
Flash CROMi-X 4.7 - enjoy!
You will probably find all your files, pictures etc on this clean installation anyway since a factory reset in TWRP leaves the data/media folder untouched, but backing them up is just good computing practice.
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD

JoinTheRealms said:
The safest method is to download the latest firmware from asus extract it and flash the .zip with trwp, from here it will overwrite twrp after you reboot so set up android 4.2 and then reboot go into fastboot and fastboot flash twrp 2.5 from there you can flash what ever 4.2 rom/kernel you desire
Click to expand...
Click to collapse
+1 this is the safest method, but once you have the latest Asus software installed use motochopper to root then use Goo Manager to install the latest twrp which is v2.6.0.0.

maxal said:
+1 this is the safest method, but once you have the latest Asus software installed use motochopper to root then use Goo Manager to install the latest twrp which is v2.6.0.0.
Click to expand...
Click to collapse
I do not see a reason to flash a stock rom. You loose your recovery, you loose root and have to start all over.
And I will stick with TWRP 2.5 for the time being. 2.6 has been OK for most users, but some had problems with it. And I don't take chances with my recovery - ever.
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD

berndblb said:
I do not see a reason to flash a stock rom. You loose your recovery, you loose root and have to start all over.
And I will stick with TWRP 2.5 for the time being. 2.6 has been OK for most users, but some had problems with it. And I don't take chances with my recovery - ever.
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD
Click to expand...
Click to collapse
I was only helping the guy to upgrade to the new bootloader and at the same time as installing the latest Asus rom. Yes you will loose root and recovery but motochopper works so easy on a fresh install and recovery is really easy to install using Goo manager. I use this method every time an update is released and available to download from Asus support.

Related

[Q] Question on ICS to JB update - Bootloader or Full?

Currently my TF300T is unlocked, rooted, ICS TWRP 2.3.1, nvflash blob files created (copies made and moved elsewhere) with AndroidRoot.mobi custom bootloader. I'm running stock ICS v9.4.3.17 and never ran any OTA's (one is downloaded/pending for install, but doesn't seem to do anything - likely because I'm unlocked?).
It's been recommended to just flash the JB bootloader & use a custom JB ROM rather than updating fully to JB (was said there are or had been, issues flashing the full JB from ASUS' website). With the nvflash blobs, I should be able to go back to ICS so I'd rather do a full update if possible. An earlier post [Q] Upgrade to JB bootloader from Unlocked ICS BL? asked the same but I need clarification on the answer (plus making sure - they were running ICS stock bootloader, not the custom from AndroidRoot like me):
mikaole said:
just fastboot TWRP for ICS and then flash the 1st JB StockRom(dl from Asus and unzip once) in TWRP.
Then fastboot TWRP for JB, then flash the latest JB StockRom(dl from Asus and unzip once) .
Then fastboot TWRP for JB and then the Rom you like
Click to expand...
Click to collapse
If reading right, in fastboot mode first flash ICS TWRP (I ignore as I already have it), then from TWRP install the 1st JB Stock ROM zip, reboot into fastboot mode, flash TWRP for JB (or should I use nvflash?), and lastly, reboot into TWRP and install the latest ASUS stock ROM zip (v10.4.2.18).
Figuring my steps are correct, what version from ASUS is considered the 1st ROM? Currently only v10.4.2.17 and v10.4.2.18 are available. Also wondering why the need to flash an earlier version of JB and then the most current? And lastly, have others in same situation done this successfully or encountered any issues I should be aware of?
I did this a short time ago to go from BB6 on ICS bootloaded to BB6 on JB. All I did was dropped back to stock ICS, upgraded TWRP, then drop the unzipped zip of the latest ASUS release. This got me stock JB on JB bootloaded. I then flashed the next BB6 version and went on my way.
The only painful part was that the post called for moving the blob to a specific folder and creating a command file. None of that worked for me. But leaving the unzipped zip file in the root of the SD card and rebooting worked flawlessly.
Good luck.
Sent from my Transformer Pad TF300T using Tapatalk HD
bsaman said:
I did this a short time ago to go from BB6 on ICS bootloaded to BB6 on JB. All I did was dropped back to stock ICS, upgraded TWRP, then drop the unzipped zip of the latest ASUS release. This got me stock JB on JB bootloaded. I then flashed the next BB6 version and went on my way.
The only painful part was that the post called for moving the blob to a specific folder and creating a command file. None of that worked for me. But leaving the unzipped zip file in the root of the SD card and rebooting worked flawlessly.
Good luck.
Sent from my Transformer Pad TF300T using Tapatalk HD
Click to expand...
Click to collapse
Thanks! So you were going from another set of instructions but ended up just flashed twrp-jb and installed the unzipped zip of Asus JB release via TWRP (I left out the revert to ICS part since I'm already there)? And do you have nvflash installed? No issue running the JB version of TWRP prior to upgrading to JB (had thought bootloader or ... would have an issue with it)? Would seem like order should be reversed, I may not be understanding it all fully!
Had come across various instructions but none seemed to fit being unlocked/rooted/nvflash/... and wasn't sure if would require different steps. Again thanks.
wha2do said:
Would seem like order should be reversed, I may not be understanding it all fully!
Had come across various instructions but none seemed to fit being unlocked/rooted/nvflash/... and wasn't sure if would require different steps. Again thanks.
Click to expand...
Click to collapse
I think you're right... I was on BB6 w/ICS bootloader (NVflashed, though I don't think it matters) and had to roll back to ASUS ICS ROM first, then rooted, then upgraded to ASUS JB ROM, and then it goes blurry. Not sure if I upgraded TWRP or rooted stock JB at this point.
In any case, I followed the "update to JB" thread to a tee, and all went well except for the step regarding the actual JB update.
Sent from my Transformer Pad TF300T using Tapatalk HD
wha2do said:
Currently my TF300T is unlocked, rooted, ICS TWRP 2.3.1, nvflash blob files created (copies made and moved elsewhere) with AndroidRoot.mobi custom bootloader. I'm running stock ICS v9.4.3.17 and never ran any OTA's (one is downloaded/pending for install, but doesn't seem to do anything - likely because I'm unlocked?).
It's been recommended to just flash the JB bootloader & use a custom JB ROM rather than updating fully to JB (was said there are or had been, issues flashing the full JB from ASUS' website). With the nvflash blobs, I should be able to go back to ICS so I'd rather do a full update if possible. An earlier post [Q] Upgrade to JB bootloader from Unlocked ICS BL? asked the same but I need clarification on the answer (plus making sure - they were running ICS stock bootloader, not the custom from AndroidRoot like me):
If reading right, in fastboot mode first flash ICS TWRP (I ignore as I already have it), then from TWRP install the 1st JB Stock ROM zip, reboot into fastboot mode, flash TWRP for JB (or should I use nvflash?), and lastly, reboot into TWRP and install the latest ASUS stock ROM zip (v10.4.2.18).
Figuring my steps are correct, what version from ASUS is considered the 1st ROM? Currently only v10.4.2.17 and v10.4.2.18 are available. Also wondering why the need to flash an earlier version of JB and then the most current? And lastly, have others in same situation done this successfully or encountered any issues I should be aware of?
Click to expand...
Click to collapse
First I want to address your possible OTA. Processing requires stock recovery on your tablet. Having Twrp or CWM means the update will not process.
When you flash a complete stock rom from fastboot, Twrp, or CWM you are flashing stock recovery as it is included in the blob.
Most versions of Asus firmware can be found here! Don't forget to look at the second post as It includes the ICS stuff and older JB.
The first version of JB was to my knowledge JB 10.4.2.9.
Sorry, I forgot why flash first version of JB.
It has been said that is when your internal sdcard was repartitioned for JB.
tobdaryl said:
First I want to address your possible OTA. Processing requires stock recovery on your tablet. Having Twrp or CWM means the update will not process.
When you flash a complete stock rom from fastboot, Twrp, or CWM you are flashing stock recovery as it is included in the blob.
Most versions of Asus firmware can be found here! Don't forget to look at the second post as It includes the ICS stuff and older JB.
The first version of JB was to my knowledge JB 10.4.2.9.
Sorry, I forgot why flash first version of JB.
It has been said that is when your internal sdcard was repartitioned for JB.
Click to expand...
Click to collapse
Thanks for the info. To add to your one comment (for others that may come across this looking for add'l info), flashing a full stock rom will overwrite any custom recovery previously in place. TWRP (using the appropriate version for your firmware) or CWM will need to be reflashed again...
Checking, it does appear v10.4.2.9 is the first version of JB on the TF300T.
I've come across at least one or more posts/guides that mention ICS v9.4.3.30 should be installed before updating to JB - one being: [GUIDE]Upgrade your TF300t to Jellybean, recovery, root & remove bloatware[Noobproof]. I'm wondering if it's because that method updates to JB using the dlpkgfile (not sure what format it is)?
My take is doing the additional flash to v9.4.3.30 first can't hurt anything, but quite possibly unnecessary here? Any other thoughts or words of warnings from anyone? Thanks!

[Q] Temporarily bricked after trying to boot into CWM

I just got my TF700 the other day. I was able to downgrade to .30, root, and unlock the bootloader without incident. I just pushed CWM per this thread: http://forum.xda-developers.com/showpost.php?p=31556045&postcount=1. I tried booting into CWM, got the standard quick vibration but the tablet was dead after that. I messed around for a while and finally after holding the power button several times in a row, it booted as normal. Battery is at 80%
Before I go any further, what just happened? Can I push CWM again the same way to re-install it? How should I proceed?
FWIW, the checksum for download 1 on the page mentioned only matched the checksum for #2. I used #2 because it matched its MD5 as it was listed on the page.
lowriderdog37 said:
I just got my TF700 the other day. I was able to downgrade to .30, root, and unlock the bootloader without incident. I just pushed CWM per this thread: http://forum.xda-developers.com/showpost.php?p=31556045&postcount=1. I tried booting into CWM, got the standard quick vibration but the tablet was dead after that. I messed around for a while and finally after holding the power button several times in a row, it booted as normal. Battery is at 80%
Before I go any further, what just happened? Can I push CWM again the same way to re-install it? How should I proceed?
FWIW, the checksum for download 1 on the page mentioned only matched the checksum for #2. I used #2 because it matched its MD5 as it was listed on the page.
Click to expand...
Click to collapse
The proper way to do this is to upgrade to the latest stock JB (10.4.4.25), unlock, and you can either fastboot the recovery or unlock it be flashing Superuser. It is not advised to downgrade,even if it seems easier, because if you do it the way I stated, everything will be latest and should not have any problems whatsoever. since you downgraded to ICS, you now have a ICS bootloader. an ICS bootloader will not boot JB, nor vice versa. so now you will need to flash a JB bootloader, which will not boot the stock ICS, so you will now need Cromi, Cyanogen,or another custom rom to get it update with JB. Make sure you have them preinstalled on a SDcard before doing any more flashing.
If I am wrong, hopefully someone will correct me.
Tylor
Sent from my ASUS Transformer TF700T Infinity Pad Using Tapatalk HD
Rom: Cyanogen Nightlies 10.1 or CleanRom 3.4.4 - Depends on the mood .
Tylorw1 said:
The proper way to do this is to upgrade to the latest stock JB (10.4.4.25), unlock, and you can either fastboot the recovery or unlock it be flashing Superuser. It is not advised to downgrade,even if it seems easier, because if you do it the way I stated, everything will be latest and should not have any problems whatsoever. since you downgraded to ICS, you now have a ICS bootloader. an ICS bootloader will not boot JB, nor vice versa. so now you will need to flash a JB bootloader, which will not boot the stock ICS, so you will now need Cromi, Cyanogen,or another custom rom to get it update with JB. Make sure you have them preinstalled on a SDcard before doing any more flashing.
If I am wrong, hopefully someone will correct me.
Tylor
Sent from my ASUS Transformer TF700T Infinity Pad Using Tapatalk HD
Rom: Cyanogen Nightlies 10.1 or CleanRom 3.4.4 - Depends on the mood .
Click to expand...
Click to collapse
The writeups I had seen prior unlocking said to downgrade to .30...so I did. I am still sitting on .30 and am planning on installing CM 10.1 which I have on both the TF700 internal and an external SD card. The only problem is what I mentioned above where my device wouldn't boot into CWM and subsequently locked up for about 15 min. Should I upgrade to JB .25 prior to booting into CWM and installing CM 10.1?
lowriderdog37 said:
The writeups I had seen prior unlocking said to downgrade to .30...so I did. I am still sitting on .30 and am planning on installing CM 10.1 which I have on both the TF700 internal and an external SD card. The only problem is what I mentioned above where my device wouldn't boot into CWM and subsequently locked up for about 15 min. Should I upgrade to JB .25 prior to booting into CWM and installing CM 10.1?
Click to expand...
Click to collapse
I CM10.1 requires the JB bootloader, If you install CM on the ICS it wont boot. I dont see why the recovery is the problem. I would try updating to JB bootloader, use the zips in Cromi's second post, and then try installing Cromi. Downgrading is only recommended if you want to stay on a locked bootloader. Otherwise, you should flash the root.then install recovery, or simply fastboot it.
In order to install CM you will need to update the bootloader, then once it is updated you will not be able to boot into the ICS rom, so you will have to already have CM10.1, also dont forget google apps, so it can be flash afterwards.
IF CM is installed with the ICS boot loader it will just not boot, it will go into recovery but that is it. I dont see any probability in bricking your device. But I am only a newb, so you may wanna wait for another's input.
Tylor
Sent from my ASUS Transformer TF700T Infinity Pad Using Tapatalk HD
Rom: Cyanogen Nightlies 10.1 or CleanRom 3.4.4 - Depends on the mood .
---------- Post added at 01:26 PM ---------- Previous post was at 01:20 PM ----------
lowriderdog37 said:
The writeups I had seen prior unlocking said to downgrade to .30...so I did. I am still sitting on .30 and am planning on installing CM 10.1 which I have on both the TF700 internal and an external SD card. The only problem is what I mentioned above where my device wouldn't boot into CWM and subsequently locked up for about 15 min. Should I upgrade to JB .25 prior to booting into CWM and installing CM 10.1?
Click to expand...
Click to collapse
Or you could install the 10.4.4.25 stock, then just fastboot a recovery. I mistakenly said root with zip, you cant without custom recovery so scratch that, the only way to install custom recovery via the method I gave is fastboot. Or the way you did so, but that requires more steps and upgrades. Also greater chance of bricking. This is because of the incompatibility of the rom, boot loader, and recovery. If you have latest recovery,I would install the bootloader, then flash CM10.1 + Gapps and should be good to go.
Tylor
Sent from my ASUS Transformer TF700T Infinity Pad Using Tapatalk HD
Rom: Cyanogen Nightlies 10.1 or CleanRom 3.4.4 - Depends on the mood .
Got it working. Yes, it appears CWM is bootloader specific. I flashed the JB bootloader and was able to get into cwm and install CM10.1 I am not up and running. Thanks!
lowriderdog37 said:
Got it working. Yes, it appears CWM is bootloader specific. I flashed the JB bootloader and was able to get into cwm and install CM10.1 I am not up and running. Thanks!
Click to expand...
Click to collapse
Just remember for future reference, keep things up to date,or at least compatible with one another or you will run into trouble later.The #1 reason for tf700's bricking software wise is people do not update their bootloader as they update their recovery. Just keep things recent and you should have not a problem.
Tylor
Sent from my ASUS Transformer TF700T Infinity Pad Using Tapatalk HD
Rom: Cyanogen Nightlies 10.1 or CleanRom 3.4.4 - Depends on the mood .

[Q] Root, Custom Roms, Unlock on Asus TF700T

Hello,
i was wondering if someone could answer some questions that i have about android and the asus tf700t.
now i already searched on google and on xda but there are so many informations and i just cant tell which one is the "best" or the right one.
My Asus is unlocked. i got that far and didnt think it would be too hard to root but i see command lines and/or 3 different kinds of software or files that i have to download first or programs like unlockroot etc.
so i was wondering if you could answer me a few questions.
1. do i need to root to put on a custom rom or is it enough that the device is unlocked?
2. what is the easiest and safest way to root?
3. what are 3 good custom roms?
i have android 4.1.1 on my asus and heard that 4.2 is out so i would like to update it but i never had an android device until now so i just want to make sure i m not destroying it after 3 months of use.
Thank you very much
Ben
Custom ROMS are pre rooted, usually, so you best bet would:
1. Update to stock 4.2.1
2. Root using Motochopper
3. Download GooManager(give root rights') from Play Store and Install TWRP by installing open script recovery.
4. Perform a factory reset via TWRP, without wiping Internal storage, or MicroSD card.
5. Install CromiX or CyanogenMod
There are other ROMS out there, but it is advised to install CromiX first because it is stock based and can be flashed over the stock ROM.
Also, make sure you know how to get into the recovery manually, and make sure you check files before flashing to make sure things downloaded properly.
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD
ROM: CleanRom Xenogenesis 4.4 DeOdex
Kernel: Hundsbuah's V3.0.5 OC Kernel
Theme: Timberwolf's Blues and Jazz Theme
Thank you for the short guide....
but here is the first problem i have....
i dont know how to upgrade to 4.2.1. or if that update is available for my device yet. some pages said it is. some said its not available.
i have no idea where to get it since over the air update is not possible due to the unlock.
ben9000 said:
Thank you for the short guide....
but here is the first problem i have....
i dont know how to upgrade to 4.2.1. or if that update is available for my device yet. some pages said it is. some said its not available.
i have no idea where to get it since over the air update is not possible due to the unlock.
Click to expand...
Click to collapse
Asus pulled the JB 4.2.1 firmware off their website, probably because they realized it had too many bugs. They probably are working on a new release and I would wait for it.
In the meantime read the forums and familiarize yourself with the process of rooting, installing a custom recovery and flashing custom roms.
If you don't want to wait, search for the forums on the Motochopper tool. I believe you can also use it to gain root under 4.1, but I'm not 100% sure.
If you have root, download Goo Manager, tap the 3 dots in the upper right and choose: Install open recovery script.
This will install the TWRP 2.5.0 custom recovery.
Boot into TWRP and select 'Backup'. This will give you a nandroid backup of your current system. Copy it to a safe place.
Next, you still being on 4.1, you need to flash the JB 4.2 bootloader which is version 10.6.1.14.4. You'll find a link in post 1 of the Cromi Xenogenesis thread in the development section. The dev packaged it with TWRP 2.5. It doesn't hurt to re-install TWRP.
Also download the latest release of the Cromi-X (ODEX) ROM, currently 4.4.1, and place both zips into the root of your internal or external SD card (your choice).
Boot into recovery, choose 'Install', navigate to the 10.6.1.14.4 bootloader/TWRP zip you downloaded and swipe to flash it. After installation the tablet will reboot into your old rom - this is fine.
At this point, just to be safe, you may want to check if you have the correct bootloader installed: Boot up with Vol Down and Power button and read the tiny script. It gives you the bootloader version.
If you're 100% sure you have the correct bootloader and TWRP 2.5.0, proceed:
Boot into TWRP recovery again, select Install, select the CROMIX 4.4.1 zip and flash it.
The Aroma installer will start and give you options to choose from. Stick with most of the default options for the beginning. You can always re-flash the rom with a different set of options selected.
Enjoy!
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD

[Q] Reverted to stock

Hi all, I decided I'd return my tf101 to ASUS stock firmware from TeamEos 4.2. So I duly flashed the f/w and all seemed to take OK, until I rebooted, the tf got stuck at the Android is updating stage, I tried reflashing everything but no good. This is not a request for help but more of a WTF. I have it working now thanks to NVFlash but I would like to understand why my first effort didn't work.
What recovery were you using?
What I did was flash the Asus stock *blob* using dd from a terminal running under TeamEos
pkfox said:
What I did was flash the Asus stock *blob* using dd from a terminal running under TeamEos
Click to expand...
Click to collapse
Well, that is the hard way.
After doing that you would need to take the Asus firmware zip and put it on a microSD and boot to stock recovery and it should install it.
When I flashed back to stock, first time (using Roach2010's 3.X.X.X CWM) I just installed the Asus Firmware zip from CWM. Worked perfectly. Second time, did the same thing using TWRP 2.3.2.3 and once again, worked perfectly.
frederuco said:
Well, that is the hard way.
After doing that you would need to take the Asus firmware zip and put it on a microSD and boot to stock recovery and it should install it.
When I flashed back to stock, first time (using Roach2010's 3.X.X.X CWM) I just installed the Asus Firmware zip from CWM. Worked perfectly. Second time, did the same thing using TWRP 2.3.2.3 and once again, worked perfectly.
Click to expand...
Click to collapse
Interesting thanks
Where can I find a rooted stock rom for the TF101? I want to return to stock and keep root rights.
Sotey said:
WHere can I find the stock rom for the TF101? I want to return to stock
Click to expand...
Click to collapse
Go to the ASUS website
Will I be able to maintain root rights and how do I know whether to grab WW or US file?
pkfox said:
Go to the ASUS website
Click to expand...
Click to collapse

[Q] [Answered] Questions before atempting to install CM

Hello xda-developers,
My TF300T was becoming very slow in the last few months so I decided to reset it to do a "fresh start". While doing so I would also like to upgrade my ROM. (Im currently running Android 4.1 with CleanRom 3.2).
I'm using the CWM Recovery 6.0.1.3 and would like to upgrade to CyanogenMod 10.2 (Stable - the *.zip file from the CM-website)
By reading several threads there seems to be some problems with current Android Versions and older bootloaders. My question is now:
Can I simply flash the new CM-zip with my recovery (After doing the factory reset) - or is there anything else I have to watch out for?
Thanks for your help in advance!
Nijin said:
Hello xda-developers,
My TF300T was becoming very slow in the last few months so I decided to reset it to do a "fresh start". While doing so I would also like to upgrade my ROM. (Im currently running Android 4.1 with CleanRom 3.2).
I'm using the CWM Recovery 6.0.1.3 and would like to upgrade to CyanogenMod 10.2 (Stable - the *.zip file from the CM-website)
By reading several threads there seems to be some problems with current Android Versions and older bootloaders. My question is now:
Can I simply flash the new CM-zip with my recovery (After doing the factory reset) - or is there anything else I have to watch out for?
Thanks for your help in advance!
Click to expand...
Click to collapse
If you are on a 4.1 ROM you probably need to upgrade your bootloader first.
The easiest way is to flash the latest ASUS stock ROM, then do a factory reset and after that flash recovery and your new ROM.
There are several ways to accomplish this, all covered in detail in several threads.
Sent from my TF300T using Tapatalk
Nijin said:
Hello xda-developers,
My TF300T was becoming very slow in the last few months so I decided to reset it to do a "fresh start". While doing so I would also like to upgrade my ROM. (Im currently running Android 4.1 with CleanRom 3.2).
I'm using the CWM Recovery 6.0.1.3 and would like to upgrade to CyanogenMod 10.2 (Stable - the *.zip file from the CM-website)
By reading several threads there seems to be some problems with current Android Versions and older bootloaders. My question is now:
Can I simply flash the new CM-zip with my recovery (After doing the factory reset) - or is there anything else I have to watch out for?
Thanks for your help in advance!
Click to expand...
Click to collapse
f69m said:
If you are on a 4.1 ROM you probably need to upgrade your bootloader first.
The easiest way is to flash the latest ASUS stock ROM, then do a factory reset and after that flash recovery and your new ROM.
There are several ways to accomplish this, all covered in detail in several threads.
Sent from my TF300T using Tapatalk
Click to expand...
Click to collapse
When you upgrade your bootloader, you will need to upgrade your recovery as well to a -42 TWRP if you are flashing CM10.2 or TWRP 2.6.3.1 for KitKat.
f69m said:
If you are on a 4.1 ROM you probably need to upgrade your bootloader first.
The easiest way is to flash the latest ASUS stock ROM, then do a factory reset and after that flash recovery and your new ROM.
There are several ways to accomplish this, all covered in detail in several threads.
Sent from my TF300T using Tapatalk
Click to expand...
Click to collapse
cmendonc2 said:
When you upgrade your bootloader, you will need to upgrade your recovery as well to a -42 TWRP if you are flashing CM10.2 or TWRP 2.6.3.1 for KitKat.
Click to expand...
Click to collapse
Alright, get Asus Stock from their website, install that, then reset and flash recovery (TWRP - what exactly does the "-42" mean?) After that I'm good to install CM.
Okay, I think I understood - thanks!
Nijin said:
Alright, get Asus Stock from their website, install that, then reset and flash recovery (TWRP - what exactly does the "-42" mean?) After that I'm good to install CM.
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Click to collapse
Oops, got the order wrong: first flash recovery, then do the factory reset using recovery. Don't use the wipe option on the bootloader screen.
There are several versions of TWRP, usually named -ics, -jb and -42.
Don't use the -ics or -jb versions with the new bootloader, but use a -42 version for flashing CM 10.
For flashing CM 11 you need yet another variant of TWRP that is not available from the official download site. Check the CM 11 thread for a download link.
Be careful, using the wrong recovery can result in an expensive brick.
Sent from my TF300T using Tapatalk
f69m said:
Oops, got the order wrong: first flash recovery, then do the factory reset using recovery. Don't use the wipe option on the bootloader screen.
There are several versions of TWRP, usually named -ics, -jb and -42.
Don't use the -ics or -jb versions with the new bootloader, but use a -42 version for flashing CM 10.
For flashing CM 11 you need yet another variant of TWRP that is not available from the official download site. Check the CM 11 thread for a download link.
Be careful, using the wrong recovery can result in an expensive brick.
Sent from my TF300T using Tapatalk
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Click to collapse
Ah okay - but this leaves another question: Why exactly do I need the Asus ROM when I already have a 4.2 recovery? Shouldn't Cyanogenmod 10.2 take care of the bootloader then?
Thanks for your help!
Nijin said:
Ah okay - but this leaves another question: Why exactly do I need the Asus ROM when I already have a 4.2 recovery? Shouldn't Cyanogenmod 10.2 take care of the bootloader then?
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Click to collapse
No, CM does not include a bootloader. That is only included in the stock ROM.
That bootloader runs early before the CM Linux kernel is loaded.
The "4.2" recovery only means that it works with the updated bootloader ASUS introduced with the Android 4.2 update. Sorry, I know it is confusing. Thank ASUS for giving us all those incompatible bootloader versions.
Sent from my TF300T using Tapatalk
f69m said:
No, CM does not include a bootloader. That is only included in the stock ROM.
That bootloader runs early before the CM Linux kernel is loaded.
The "4.2" recovery only means that it works with the updated bootloader ASUS introduced with the Android 4.2 update. Sorry, I know it is confusing. Thank ASUS for giving us all those incompatible bootloader versions.
Sent from my TF300T using Tapatalk
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Click to collapse
Okay, this makes sense (kind of). I think I know everything now - I'l try to update when I get a little free time. Thanks for your help!

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