[Q] Recovery mode - ZenFone 2 Q&A, Help & Troubleshooting

History : i've been using an earlier pre-rooted rom for this device and after having taking care of unrooting it, i tried the OTA Update to upgrade and access the TWSP and Garbage rom.
My issue is that as i access the phone in fastboot mode with fastboot and adb i can't acces the recovery mode : the phone reboot to fastboot.
Any hint appreciated
Manuel

Have you tried rerooting and flashing a recovery again?
Sent from my SGH-T599N using XDA Forums Pro.

lowvoice said:
Have you tried rerooting and flashing a recovery again?
Click to expand...
Click to collapse
Rooted again with "cai_dat_CWM" (root ok)
Flashed with fastboot flash recovery twrp.img (transfert ok)
same issue after selecting recovery mode
is the unlock available in 2.15.40.13 ((2015/05/06) ?

U need to unlock ur bootloader first to flash permanent TWRP
Sent from my ASUS_Z008D using XDA Free mobile app

yakub234go said:
U need to unlock ur bootloader first to flash permanent TWRP
Click to expand...
Click to collapse
According to http://forum.xda-developers.com/zenfone2/general/congrats-to-bootlocker-unlocked-t3138547
Step 1 to unlock is Update to 2.19.40
I'm on 2.15.40.13 and the OTA fails at the fastboot menu

http://forum.xda-developers.com/zenfone2/orig-development/rom-pre-root-img-t3079590/page51
I forgot this was a pre-root system.img file as explained, no stock system.img provided
I think the recovery limitation was made on purpose to avoid bootloop after OTA.
Looking for stock rom to flash via fastboot

Fixed :
Used cai_dat_CWM Tethered to flash stock rom from Asus Website
UL-Z00A-WW-2.19.40.18-user.zip from Asus Website
Then again to root with SuperSU246 update from zip

Related

Steps to TWRP

Im on Z008 2.19.40.12_20150612 I cant seem to flash twrp no matter how hard I try. Im rooted and unlocked BL. Is fastboot easiest way or sideload or from twrp manager? Does someone have the download link of which IMG I would need?
Check the General resources thread, you might have to upgrade your stock firmware version.
Download twrp manager from app store. Use that.
Sent from my ASUS_Z00AD using Tapatalk
I've tried that but what img file do I need for my firmware?
I see the new one is 2.20.40.63 what would be the right twrp img file to flash?
cell2011 said:
I see the new one is 2.20.40.63 what would be the right twrp img file to flash?
Click to expand...
Click to collapse
You must be on 2.19.40.18 - 2.19.40.22 to unlock your bootloader. Only after unlocking your bootloader can you flash TWRP onto your phone permanently...
Go to general section and check out the 1st stickied post, it will give you the info you need to do this...
I'm already unlocked and rooted. What img twrp should I flash based on my firmware?
cell2011 said:
I'm already unlocked and rooted. What img twrp should I flash based on my firmware?
Click to expand...
Click to collapse
TWRP officially support Zenfone 2 (551ML) so get from there....
I'm 550 ml now what? Can anyone just send me a link to the right img?
What are the steps to flash this TWRP recovery 2.8.7.0 OTG-USB NTFS.zip. This is for 550 ml
I'd use untethered Twrp then flash, but that's me.
Twrp manager automatically picks the right recovery.
Sent from my ASUS_Z00AD using Tapatalk
I should be able to flash a rom through CWM that way right? I'm already unlocked bootloader and rooted and su is on my sd card. Can I flash a rom gaps and su again through CWM and I'm good? But I'll be stuck with that rom till I do perm recovery right? CM 12 not for 550 yet?
ultramag69 said:
I'd use untethered Twrp then flash, but that's me.
Click to expand...
Click to collapse
I should be able to flash CWM rom gapps su that way right? But then I'd be stuck with that rom till I'm perm recovery?
cell2011 said:
I should be able to flash CWM rom gapps su that way right? But then I'd be stuck with that rom till I'm perm recovery?
Click to expand...
Click to collapse
Yes...

Phone dead after flashing! Help!

Hey guys,
I have Canvas A1 device which I had upgraded to Marshmallow but later on i flashed CM 12 LP. Then I tried to get back on Official Stock LP by using flash files from SP Tool it was successful but my phone is not booting up!
I flashed it on Download Mode! Now what should i do help me?
can u boot in bootloder?
if yes, flash a custom recovery and apply this nandroid to go to stock rom, replace your custom recovery with stock and lock your bootloder to return to officiall mode of your phone.
http://forum.xda-developers.com/canvas-a1/help/dg-downgrade-to-stock-kitkat-4-4-4-t3070721
madhurajkumar said:
can u boot in bootloder?
if yes, flash a custom recovery and apply this nandroid to go to stock rom, replace your custom recovery with stock and lock your bootloder to return to officiall mode of your phone.
http://forum.xda-developers.com/canvas-a1/help/dg-downgrade-to-stock-kitkat-4-4-4-t3070721
Click to expand...
Click to collapse
not able go into recovery plz help. but gets detected only for flashing
nilesh15 said:
not able go into recovery plz help. but gets detected only for flashing
Click to expand...
Click to collapse
If you have a working fastboot in your pc then follow these steps:
1. copy compatible recovery.img into the fastboot folder.
2.go to bootloader and type this command: fastboot boot recovery.img .
mee too facing this same situation... :\ please help me
update sp flash tool and try again. it solved mine i hope it helps.

ota update cant

i did my htc10 unlock and flashing TWRP recovery for make backupfile.
it was succesed but cant ota update.
so i did this thread http://forum.xda-developers.com/htc-10/how-to/stock-stock-collection-recovery-ruu-ota-t3359297
go to STOCK.
process
1.download TWRP backup 1.55.709.5 file and restore in recovery.
Reboot system.
2. download Stock Recovery 1.55.709.5 and flash in adb prompt mod.
3. Relock in adb
Reboot system.
4.go to settings-about-software updates check now !
5.but cant update software
Now my htc10 info
Android v 6.0.1
Software number 1.55.709.5
Cidnum HTC__621
Let me know I did what wrong.
Ota will be possible be I do now?
What error do you get?
Sent from my HTC 10 using XDA-Developers mobile app
yldlj said:
What error do you get?
Sent from my HTC 10 using XDA-Developers mobile app
Click to expand...
Click to collapse
cant update software
there was an unexpected error and the file system may be corrupted.
Please contact HTC support for further assistance.
i cant ota update 1.80.709.1
How can i ota update?
and where is htc__621 RUU ?
Ther is no RUU for .709
Sent from my HTC 10 using XDA-Developers mobile app
htcppadol said:
i did my htc10 unlock and flashing TWRP recovery for make backupfile.
it was succesed but cant ota update.
so i did this thread http://forum.xda-developers.com/htc-10/how-to/stock-stock-collection-recovery-ruu-ota-t3359297
go to STOCK.
process
1.download TWRP backup 1.55.709.5 file and restore in recovery.
Reboot system.
2. download Stock Recovery 1.55.709.5 and flash in adb prompt mod.
3. Relock in adb
Reboot system.
4.go to settings-about-software updates check now !
5.but cant update software
Now my htc10 info
Android v 6.0.1
Software number 1.55.709.5
Cidnum HTC__621
Let me know I did what wrong.
Ota will be possible be I do now?
Click to expand...
Click to collapse
I also have cid621 did as per your steps
Just didnt locked bootloader
May be you need unlocked bootliader for update
Fyi i have successfully updated to 1.80
jhakjhuk1853 said:
I also have cid621 did as per your steps
Just didnt locked bootloader
May be you need unlocked bootliader for update
Fyi i have successfully updated to 1.80
Click to expand...
Click to collapse
hi,,,ty ur reply ,,,,
unlocked bootloader can software update ?
if can i will try ,,,
======
i will retry ,,,
process
unlock ,, flash twrp recovery
1.download TWRP backup 1.55.709.5 file and restore in recovery.
Reboot system.
2. download Stock Recovery 1.55.709.5 and flash in adb prompt mod.
xxxxxxxxx3. Relock in adb => dont this ????
Reboot system.
4.go to settings-about-software updates check now !
5. try update software
ok?
htcppadol said:
hi,,,ty ur reply ,,,,
unlocked bootloader can software update ?
if can i will try ,,,
======
i will retry ,,,
process
unlock ,, flash twrp recovery
1.download TWRP backup 1.55.709.5 file and restore in recovery.
Reboot system.
2. download Stock Recovery 1.55.709.5 and flash in adb prompt mod.
xxxxxxxxx3. Relock in adb => dont this ????
Reboot system.
4.go to settings-about-software updates check now !
5. try update software
ok?
Click to expand...
Click to collapse
Yes its correct procedure
Assuming you have unlocked bootloader
Flash twrp
Restore stock backup
Flash stock recovery
Reboot
And take updates
It should work i have done same
jhakjhuk1853 said:
Yes its correct procedure
Assuming you have unlocked bootloader
Flash twrp
Restore stock backup
Flash stock recovery
Reboot
And take updates
It should work i have done same
Click to expand...
Click to collapse
i did that but i cant' software update......
:crying::crying:
jhakjhuk1853 said:
Yes its correct procedure
Assuming you have unlocked bootloader
Flash twrp
Restore stock backup
Flash stock recovery
Reboot
And take updates
It should work i have done same
Click to expand...
Click to collapse
1. unlock bootloader
(visit htcdev.com)
2. flash twrp
3. in TWRP recovery twrp-3.0.2-4
wipe - advanced wipe
*dalvik/ art cache
*cache
*system
*data
Restore backup v.1.55.709.5
Reboot bootloader
4. flash stock recovery v.1.55.709.5
5. Reboot
6. go to setting-software update TRY Update !!!!!!
but can't update :crying::crying::crying:
what's wrong? ......
htcppadol said:
1. unlock bootloader
(visit htcdev.com)
2. flash twrp
3. in TWRP recovery twrp-3.0.2-4
wipe - advanced wipe
*dalvik/ art cache
*cache
*system
*data
Restore backup v.1.55.709.5
Reboot bootloader
4. flash stock recovery v.1.55.709.5
5. Reboot
6. go to setting-software update TRY Update !!!!!!
but can't update :crying::crying::crying:
what's wrong? ......
Click to expand...
Click to collapse
I would recommend you
Favtory resrt device from setting
Erase everything
Then check software updates
htcppadol said:
1. unlock bootloader
(visit htcdev.com)
2. flash twrp
3. in TWRP recovery twrp-3.0.2-4
wipe - advanced wipe
*dalvik/ art cache
*cache
*system
*data
Restore backup v.1.55.709.5
Reboot bootloader
4. flash stock recovery v.1.55.709.5
5. Reboot
6. go to setting-software update TRY Update !!!!!!
but can't update :crying::crying::crying:
what's wrong? ......
Click to expand...
Click to collapse
Sometimes you get the corrupt error nothing you do will get it working. Check out the stock thread. You can manually flash the updated firmware and stock images.
jhakjhuk1853 said:
I would recommend you
Favtory resrt device from setting
Erase everything
Then check software updates
Click to expand...
Click to collapse
ty but cant software update
-.-;;
I give up
yldlj said:
I give up
Click to expand...
Click to collapse
I almost give up condition too
Have you tryed doing as i suggested?

My bootloader is gone, luckly just the bootloader.

Hey!
I have a Zenfone 2 ze550cl (Z00D) with cyanogenmod 12.1
I think i flashed something wrong from adb and now my bootloader mode don't work anymore :cyclops:, when i restart the phone in the bootloader mode it show me the cyanogenmod logo forever.
When i restart in normal mode i have no problem and the recovery mode (twrp 2.8.7.0) work fine too!!!! The problem is JUST the bootloader that i dunno how reinstall it. I can do all except enter in the bootloader mode.
Do u guys have some idea on how to reinstall the bootloader in my phone?
Thank you in Advice !!!!:laugh:
Flash stock recovery using twrp.
Boot to stock recovery and sideload stock firmware.
INDIAN-MAfIA said:
Flash stock recovery using twrp.
Boot to stock recovery and sideload stock firmware.
Click to expand...
Click to collapse
Thanks for the response,
Where i can find the stock recovery for my phone?
Giammaofwar said:
Thanks for the response,
Where i can find the stock recovery for my phone?
Click to expand...
Click to collapse
Either extract from the firmware zip
Or you'll find in the 'general' tab
When i extract the file from the zip firmware i found:
- ifwi.zip
-asusfw.img
-boot.img
-droidboot.img
......
Wich one of this file for restore the stock recovery mode?

Root

If I am on stock recovery and unlocked bootloader, is it possible to root my phone without twrp by flashing magisk zip in stock recovery?
Sprinklefart said:
If I am on stock recovery and unlocked bootloader, is it possible to root my phone without twrp by flashing magisk zip in stock recovery?
Click to expand...
Click to collapse
No. Stock recovery will only flash images & zips from OnePlus.
Stock recovery only works with officially signed files from OnePlus.
If you already went through the trouble of unlocking the bootloader then flashing a custom recovery is very easy and straightforward. Otherwise you might as well relock the bootloader.
Theoretically it is possible with MAGISK (even with locked bootloader) but it didn't work for me...
Steps:
1. Extract the boot.img from stock rom zip
2. Patch with Magisk Manager
3. Rename the patched one to boot.img and replace in stock Rom zip
4. Flash the zip in stock revovery
Unluckily I finish with a "Installation failed" error
Did anybody managed this with 5.02 rom and locked bootloader. I got told that for older stock rom it was possible
Sent from my ONEPLUS A5010 using Tapatalk
No, no, no...
What you do is that you let the Magisk Manager patch the stock boot image (as in 1 & 2 above). Then you use fastboot to flash the patched image to your device. No custom recovery needed...
Code:
fastboot flash boot patched_boot.img
Your bootloader has to be unlocked though.
Didgeridoohan said:
No, no, no...
What you do is that you let the Magisk Manager patch the stock boot image (as in 1 & 2 above). Then you use fastboot to flash the patched image to your device. No custom recovery needed...
Code:
fastboot flash boot patched_boot.img
Your bootloader has to be unlocked though.
Click to expand...
Click to collapse
With fastboot I also tried without success. As you told, it is required that the bootloader is unlocked.
Sent from my ONEPLUS A5010 using Tapatalk

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