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Update to 4.2.2 from 4.1.2

Hi folks! It has been a while since I have been on this forum; and I have a question about how to update from 4.1.2. to 4.2.2.
The process is not quite clear to me. Can I just download the Asus Firmware and flash through existing TWRP recovery (4.1.2 version)? Do I have to flash a kernel and new recovery using fastboot first? I see some step-by-step guides but also a view warnings. It is a littlebit vague to me what to do.Can anyone guide me through the process please?
I am on Hydro 7 but looking to update preferably to another custom 4.2.2. base rom. Tips are welcome

Best way is to download the firmware from asus website extract it (theres a zip inside the zip) and flash it with twrp, this will get rid of twrp so after the first boot find the approprate version of twrp and reflash it with fastboot, from there you can flash custom roms/ kernels at will
goodluck

I'm not sure if twrp will work. My upgrade path was to use fastboot the official zip from the Asus website, then fastboot twrp. Be careful which version of twrp you fastboot because it will cause a brick. I think twrp-2.5-4.2 should work for the US version for the official blob from the Asus website. For the WW version of the blob I used twrp version 2.4-4.2 successfully. Good luck!
Sent from my SAMSUNG-SGH-T989 using Tapatalk 2

JoinTheRealms said:
Best way is to download the firmware from asus website extract it (theres a zip inside the zip) and flash it with twrp, this will get rid of twrp so after the first boot find the approprate version of twrp and reflash it with fastboot, from there you can flash custom roms/ kernels at will
goodluck
Click to expand...
Click to collapse
Doen't work, will try the method above

extract the blob from the firmware zip.
usw via cmd: fastboot flash system blob
thats all

Hi
I'm also still running 4.1.1 on my TF300TG (WW-version).
The bootloader is unlocked with the asus-tool, cwm-recovery (CWM-based recovery v6.0.1.3) flashed with fastboot and the system is rooted with supersu.
Now i want to update to 4.2.1 but it won't work. neither with the SOP for manual update nor from cwm-recovery.
From what i found it should work like this:
- download the 4.2.1 (10.6.2.6) rom file from the asus website
- extract the zip (once)
- open the second zip and open \META-INF\com\google\android\updater-script
- delete everything except "assert(package_extract_file("blob", "/tmp/blob"), write_raw_image("/tmp/blob", "staging"),delete("/tmp/blob"));
set_progress(1.000000);"
- save file and save the zip
- put zip on sdcard and install from cwm-recovery
can someone tell me, if this is correct? or if i should only flash the blob with fastboot?
any help is appreciated!
thx!

[Q] Installing new bootloader: brick-risk?!

My device:
- TF300
- Android 4.2.2. / CM10.1 (10.1-20130621-nightly-tf300t)
- WW_epad-10.4.2.9-20120809 (= 4.1 bootloader version)
- TWRP 2.6 recovery (for bootloader v4.1)
My aim is to update to CM10.2, therefore I need a bootloader version 4.2. I downloaded the latest firmware from the asus-website (TF300T-WW_epad-10_6_1_27_5-UpdateLauncher.zip) and put it on /sdcard.
But I'm in doubt:
- Is the asus firmwire described above the best way to upgrade my bootloader? And can I use TWRP to install this zip?
- If so, do I need to change the TWRP version to 2.6 ready for -4.2 (teamw.in/project/twrp2/97) not at all, before or after I installed the new bootloader?
I know bootloader/recovery issues can easily brick a TF300, so to be sure I ask. Thanks in advance!

Found this thread:
Quote:
Originally Posted by Nschneider7 View Post
Nope missed that and was just reading about it. Can I just flash the "TF300T-US_epad-10_6_1_27_1-UpdateLauncher" zip in TWRP? Then from there flash the new TWRP and then install CM? Or do I have to go back and let it upgrade to that point?
I flashed the blob via fastboot. Then flashed recovery via fast boot. Then cm10.2 from recovery. I was on old June build of 10.1 and 4.1 bootloader same as you. Be safe fastboot flash follow guide in q and a section
Sent from inside my mkv.
Same question, but not exactly answered: can you do this without a cable connection with your pc?

X10i/3011 said:
Found this thread:
Quote:
Originally Posted by Nschneider7 View Post
Nope missed that and was just reading about it. Can I just flash the "TF300T-US_epad-10_6_1_27_1-UpdateLauncher" zip in TWRP? Then from there flash the new TWRP and then install CM? Or do I have to go back and let it upgrade to that point?
I flashed the blob via fastboot. Then flashed recovery via fast boot. Then cm10.2 from recovery. I was on old June build of 10.1 and 4.1 bootloader same as you. Be safe fastboot flash follow guide in q and a section
Sent from inside my mkv.
Same question, but not exactly answered: can you do this without a cable connection with your pc?
Click to expand...
Click to collapse
Honestly, I'd rather be safe than sorry when upgrading bootloaders. So I would always suggest using the cable connection because it is less likely to fail. You probably could get away without using it to flash stock, but you wouldn't be able to flash TWRP without fastboot, and then couldn't flash a custom ROM. But everything feels safer once you have Nvflash backups.

X10i/3011 said:
My device:
- TF300
- Android 4.2.2. / CM10.1 (10.1-20130621-nightly-tf300t)
- WW_epad-10.4.2.9-20120809 (= 4.1 bootloader version)
- TWRP 2.6 recovery (for bootloader v4.1)
My aim is to update to CM10.2, therefore I need a bootloader version 4.2. I downloaded the latest firmware from the asus-website (TF300T-WW_epad-10_6_1_27_5-UpdateLauncher.zip) and put it on /sdcard.
But I'm in doubt:
- Is the asus firmwire described above the best way to upgrade my bootloader? And can I use TWRP to install this zip?
- If so, do I need to change the TWRP version to 2.6 ready for -4.2 (teamw.in/project/twrp2/97) not at all, before or after I installed the new bootloader?
I know bootloader/recovery issues can easily brick a TF300, so to be sure I ask. Thanks in advance!
Click to expand...
Click to collapse
I was in the same situation as you not so long ago. Was on 4.1.1 with TWRP 2.6.3.0 JB installed. Asked myself these questions repeatedly. I updated via fastboot to the staging partition using the blob within the latested ASUS firmware zip file. The blob file contains, bootloader, recovery, system and boot. This means your are essentially returning to stock everything upon flashing. This was a huge sigh of relief as I didn't want to brick my device because of the same concerns you have. So I flashed via fastboot to 10.6.2.10 then flashed to TWRP 2.5.0 4.2 as 2.6.3.0 didn't work for me for some reason. I heard a number of people say that 2.6.3.0 4.2 is buggy and suggested to stay with 2.5.0 in which I would recommend from experience. Then flash your custom firmware.

Pretty lost by now. I am still (sick of it) on an unlocked Asus stock 4.2.1 with TWRP 2.5. My intention is to change the ROM but was considering CM 11 which I understand does require TWRP 2.6.X at least. I was hoping for a fix for installing navflash on post JB but I believe does not possible so anything that means touching the bootloader makes me very concern.
I was wondering:
- Can I flash TWRP 2.6 (4.2 img file i beleive) directly from my already installes TWRP 2.5 bootloader and then install CM 11? or do I need fastboot process again?
- Is CM 11 worth on the TF300? I just need some stability and reasonable speed after having so many problems with the stock rom.
Thanks.

luison said:
Pretty lost by now. I am still (sick of it) on an unlocked Asus stock 4.2.1 with TWRP 2.5. My intention is to change the ROM but was considering CM 11 which I understand does require TWRP 2.6.X at least. I was hoping for a fix for installing navflash on post JB but I believe does not possible so anything that means touching the bootloader makes me very concern.
I was wondering:
- Can I flash TWRP 2.6 (4.2 img file i beleive) directly from my already installes TWRP 2.5 bootloader and then install CM 11? or do I need fastboot process again?
- Is CM 11 worth on the TF300? I just need some stability and reasonable speed after having so many problems with the stock rom.
Thanks.
Click to expand...
Click to collapse
Yes, CM11 requires TWRP 2.6.3.1.
You can install NvFlash on a JellyBean Bootloader, link and guide is in my signature.
If you bootloader is above 10.6.1.8, you can just flash the TWRP 2.6.3.1 and then reboot and then flash CM11 + gapps.
I think it is super smooth with the OC Kernel.

[Q] Unable to install CM11 on TF300T

Hi guys, I want place question to CM11 oficial topic, but I have <10 post. So here is my issue. I have 4.2 FB Asus FW. Then installed latest TWRP. But if I want to install CM11 nightly build (tried last one and some older one) I allways get this message after some minutes of flashing:
E:Error executing updater binary in zip '/sdcard/cm11-20140111-NIGHTLY-tf300t.zip'
Error flashing zip '/sdcard/cm11-20140111-NIGHTLY-tf300t.zip'
FAILED
Thanks for helping,
froxic

froxic said:
Hi guys, I want place question to CM11 oficial topic, but I have <10 post. So here is my issue. I have 4.2 FB Asus FW. Then installed latest TWRP. But if I want to install CM11 nightly build (tried last one and some older one) I allways get this message after some minutes of flashing:
E:Error executing updater binary in zip '/sdcard/cm11-20140111-NIGHTLY-tf300t.zip'
Error flashing zip '/sdcard/cm11-20140111-NIGHTLY-tf300t.zip'
FAILED
Thanks for helping,
froxic
Click to expand...
Click to collapse
Use the TWRP that I posted about here:
http://forum.xda-developers.com/showpost.php?p=48508679&postcount=7

Philz CWM Recovery
froxic said:
Hi guys, I want place question to CM11 oficial topic, but I have <10 post. So here is my issue. I have 4.2 FB Asus FW. Then installed latest TWRP. But if I want to install CM11 nightly build (tried last one and some older one) I allways get this message after some minutes of flashing:
E:Error executing updater binary in zip '/sdcard/cm11-20140111-NIGHTLY-tf300t.zip'
Error flashing zip '/sdcard/cm11-20140111-NIGHTLY-tf300t.zip'
FAILED
Thanks for helping,
froxic
Click to expand...
Click to collapse
If you would like a flashable zip recovery, that you can just flash from your current recovery try this one out....
Philz-tf300t-recovery.zip

Thank you guys - posted TWRP worked like a charm! :good:

can't flash newer TWRP or KK

I have created a post in the transformerforums forum on this issue here:
http://www.transformerforums.com/forum/asus-transformer-tf101-roms/44647-unable-unzip-flash-katkiss-4-4-4-a.html
I am able to flash my tablet back to stock and root as well as install custom recovery using Easy Flash, but can't flash KK or a newer version of TWRP. I have run KK before (4.3 I think). Keep getting message that I'm unable to open the zip file.

barkeater said:
I have created a post in the transformerforums forum on this issue here: can't post link till I've got ten posts
I am able to flash my tablet back to stock and root as well as install custom recovery using Easy Flash, but can't flash KK or a newer version of TWRP. I have run KK before (4.3 I think). Keep getting message that I'm unable to open the zip file.
Click to expand...
Click to collapse
Do you get the same message for both twrp and the kk rom

pops106 said:
Do you get the same message for both twrp and the kk rom
Click to expand...
Click to collapse
Well, I was, but with a little help I have now successfully updated twrp to current version. Thanks SidneyK.
However, I am still unable to flash KK 4.4.4-033. I have also tried flashing older versions of KK (i.e., 4.3) with same result. Not sure what to do from here.
Update: Successfully installed KK 4.4.4 using the side loader feature of TWRP. Everything is now right with the world

[Q] Error while flashing a CM based ROM after downgrading to KK from 5.0

So, I had Asia 5.0.2 and I saw a FIUI ROM for our device at the MIUI forums. I decided to give this a go and first downgraded to KK and then tried to flash the zip from TWRP and Philz recovery but got this error:
"Can't install this package on top of incompatible data. Please try another package or run a factory reset"
I thought it might be a ROM specific error, but I also tried to flash CM11 but got the same error. How can I get around this? Is this an issue with the updater script or something?
Any help will be appreciated.

prateektaneja said:
So, I had Asia 5.0.2 and I saw a FIUI ROM for our device at the MIUI forums. I decided to give this a go and first downgraded to KK and then tried to flash the zip from TWRP and Philz recovery but got this error:
"Can't install this package on top of incompatible data. Please try another package or run a factory reset"
I thought it might be a ROM specific error, but I also tried to flash CM11 but got the same error. How can I get around this? Is this an issue with the updater script or something?
Any help will be appreciated.
Click to expand...
Click to collapse
Did you do a factory reset from the recovery menu?