Develop Bugs

ZF2 bootloader stuck

Hi
I think I tried installing the dual twrp clockwork bootloader a long time ago and it never worked. I still have the standard bootloader but when I select recovery it just restarts to the normal boot option.
So basically its stuck, I can't use adb to put the latest factory rom on. I can use adb to reboot but once again I'm presented with the normal boot option. I can't do a factory restore either.
I'm looking for a way to force flash a fresh bootloader or repair somehow.

First you need unlocked bootloader for installing twrp.
And if you don't want unlock bootloader,you must install stock recovery

Leftrand said:
First you need unlocked bootloader for installing twrp.
And if you don't want unlock bootloader,you must install stock recovery
Click to expand...
Click to collapse
Is there a method to just flash the stock recovery?

rsgametech said:
Is there a method to just flash the stock recovery?
Click to expand...
Click to collapse
Download stock recovery img according your version HERE and flash with terminal emulator.

What are the commands I must use?

This worked like a charm
Rashr - Flash Tool worked like a charm, updated repo, pointed to the correct recovery.img and rebooted and working!
https://play.google.com/store/apps/details?id=de.mkrtchyan.recoverytools

Help Please. Soft-Bricked Device

Hello all!
I recently flashed the 4.16.xx firmware to my device. I am now stuck on the Bliss Rom bootscreen for some reason. Booting into recovery takes me to stock recovery and the phone isn't being recognized through ADB on several different PC's.
Am I screwed here? Any options?
Thanks for any input.

Try going into the fastboot option from the hboot (or called bootloader to many people. To get to hboot, do power and volume down when the phone is booting up. ) and try flashing your TWRP recovery from there. Also make sure your drivers are working.
If you don't know how to flash recovery just Google it, you should be fine.
Dw, dont panic, it'll be fine xD

Zomb!e said:
I recently flashed the 4.16.xx firmware to my device. I am now stuck on the Bliss Rom bootscreen for some reason. Booting into recovery takes me to stock recovery and the phone isn't being recognized through ADB on several different PC's.
Click to expand...
Click to collapse
Stock recovery is the logical result for flashing firmware, unless the firmware was hacked to remove stock recovery.
adb not working, is also normal. You need to be in OS or recovery to use adb commands (and I don't know whether you can with stock recovery). adb does not work in bootloader.
If you flashed an official firmware with s-on, then not boot is also the expected result.
You need to unlock the bootloader again, flash TWRP back onto the phone, and flash a ROM.

redpoint73 said:
Stock recovery is the logical result for flashing firmware, unless the firmware was hacked to remove stock recovery.
adb not working, is also normal. You need to be in OS or recovery to use adb commands (and I don't know whether you can with stock recovery). adb does not work in bootloader.
If you flashed an official firmware with s-on, then not boot is also the expected result.
You need to unlock the bootloader again, flash TWRP back onto the phone, and flash a ROM.
Click to expand...
Click to collapse
Hey thanks for the reply!
I figured it out finally and forgot to update the post. I ended up finding and flashing a Lollipop RUU from the SDcard and that got me booted up. Then I just had to re-flash TWRP, re-root and flash a new rom.
All is well now. Thanks for trying to help out.

Only fastboot works on my zenfone.

Hi. I'm terribly lost.
I bought a ze500kl (z00ed) and played around with root, twrp and marshmallow. The last thing I did was installing marshmallow and then I wanted to flash twrp.
What I ended up with is a phone which you can't boot, you can't get into recovery and I'm not even able to flash any other recovery than the stock one. And even if I flash it 'successsuccessfully' I'm still not able to boot into it.
Code:
fastboot reboot-bootloader
yields the phone starting back into fastboot mode.
As far as I understood my bootloader seems to be locked.
How can I get my phone working again?

The command fastboot reboot-bootloader only boots you into the bootloader, meaning to the fastboot. If you want to boot to recovery, you need to select this option in the fastboot menu. I don't remember if you can use a fastboot command for that, and I can't turn off my phone to check.

On the ze500kl, when phone off, press vol- and power to enter recovery.

some progress
Thanks for the info. I did already try to wrok with the vol- button but it just keeps showing the ASUS and android logos and doesn't start twrp. I've succeeded to install the system thanks to the following site: (I c'an't post it cuz I'm not here long enough) however now I'm again not getting into twrp.

vanderguru said:
Thanks for the info. I did already try to wrok with the vol- button but it just keeps showing the ASUS and android logos and doesn't start twrp. I've succeeded to install the system thanks to the following site: (I c'an't post it cuz I'm not here long enough) however now I'm again not getting into twrp.
Click to expand...
Click to collapse
If you haven't unlocked your bootloader then you can't flash TWRP. You need to unlock bootloader. I have the 551ML so can't help here. Try the search function and read...
Try to erase your cache partition in fastboot with the command "fastboot erase cache", this might get you booting back into Android but since you've been playing around without doing the necessary reading, no guarantees...
To get to recovery, stock or custom, you must go through fastboot or bootloader mode. You need to use the volume key until it says recovery then hit power key. It will reboot the phone and most probably show you a droid on its back with "Error" above it (if it's still stock). Hold down power and press volume up to enter recovery.

ultramag69 said:
If you haven't unlocked your bootloader then you can't flash TWRP. You need to unlock bootloader. I have the 551ML so can't help here. Try the search function and read...
Try to erase your cache partition in fastboot with the command "fastboot erase cache", this might get you booting back into Android but since you've been playing around without doing the necessary reading, no guarantees...
To get to recovery, stock or custom, you must go through fastboot or bootloader mode. You need to use the volume key until it says recovery then hit power key. It will reboot the phone and most probably show you a droid on its back with "Error" above it (if it's still stock). Hold down power and press volume up to enter recovery.
Click to expand...
Click to collapse
I did qutite some experimenting today. What I'm currently ended up with is:
1) I can boot into the system.
2) I can't boot into the recovery of the Phone
3) I can boot the StockRecovery via fastboot however I can't boot TWRP by any procedure (Although I was able to do so during my experimenting. I don't understand why it sometimes works and sometimes doesn't)
4) My Phone is Rooted (at least it says so)
5) I have run the Unlock.Zip via TWRP when I had TWRP flashed however now I'm again at a point where I can't start TWRP at all.
I find this very confusing and I can't see any pattern to it. For now I'm OK with having a more or less functional phone but I'd like it to be more reliable and predictable in behaviour.

First of all you can't boot directly to recovery the way you are thinking. Booting into fastboot (actually called the bootloader) then selecting recovery is the normal way. You can't have 2 recoveries on your phone. So you probably did the tethered version of TWRP the first time. I don't have the link handy but you need to get the official TWRP and use fastboot to install.
Sent from my ASUS_Z00A using Tapatalk

You HAVEN'T UNLOCKED YOUR BOOTLOADER...
No recovery or custom rom will flash successfully... It will say it will, but you will either go into bootloop or just get stuck at ASUS logo...
Nothing will stick until the bootloader is unlocked, if you use tethered TWRP and flash a custom rom you will softbrick your phone until you flash a stock rom back on.
If you go ahead and flash TWRP onto your phone using fastboot then you will have NO recovery on your phone.
You have been warned...

ultramag69 said:
You HAVEN'T UNLOCKED YOUR BOOTLOADER...
No recovery or custom rom will flash successfully... It will say it will, but you will either go into bootloop or just get stuck at ASUS logo...
Nothing will stick until the bootloader is unlocked, if you use tethered TWRP and flash a custom rom you will softbrick your phone until you flash a stock rom back on.
If you go ahead and flash TWRP onto your phone using fastboot then you will have NO recovery on your phone.
You have been warned...
Click to expand...
Click to collapse
Well I disagree and I think you are wrong . I strongly assume that I have TWRP installed as I'm able to boot into it without having the phone connected to the computer.
Consequently I HAVE unlocked my bootloader and I DO HAVE a recovery on my phone. And of course I'm not able to install a custom rom seing that there aren't any for my model yet.
I think however that I've (for now) [SOLVED] my problem and we're drifting away from the original topic. Thanks for your quick help :highfive:

M8s stuck in bootloader

Hello everyone. I got a M8s from a friend wich is stuck in bootloader. The recovery didn't work at the begin, so I flashed twrp-recovery-2.8.6.0-m8s-qlul.img (flashing recovery using htc_fastboot.exe flash recovery theimagename.img) and it worked, then I tried to install a custom ROM Android_Pandora_Rom_1.2_(Discontinued).zip wich went all the steps fine until: Optimizing applications 8 of 204..then phone shat down to black screen. I booted back to bootloader, recovery, wiped and go for a new install, same issue.
After that, I was going to install lineage-13.0-20170715-UNOFFICIAL-m8qlul.zip where the developer of this rom recommends twrp-3.0.2-0-m8ql.img so I tried to flash it (flashing recovery using htc_fastboot.exe flash recovery theimagename.img), then tried to acces recovery, brings me back to bootloader so fast, rebooted bootloader, tried again, same problem. Tried the fasboot erase cache, no help.
The Hboot state is Unlocked and the S is ON. I tried some other recovery images, as stock_signed or 3.0.1, tried the one from M8 ToolKit but all failed and I still can't access recovery, everyting I do, it brings me back to bootloader. I did htc_fastboot boot recoveryfile.img wich works, but useless, the dd if= method to set the recovery permanent load did not work after reboot, /data and /system can't be mountet, it seems the "boot recovery" option is 99% readonly.
Any advice, any help please? It would be much appreciated! Thanks in advance!

Hi McBad,
you could try the following. I also had some problems to access the recovery.
- Again bring the phone into fastboot, flash the 2.8 recovery and access it
- Do a wipe for factory reset, not just only cache
- after that try to flash the twrp-3.0.1-0-m8ql.img version, the other one worked for me neither
- the try to install the custom ROM LOS13
I hope this will help you.
clone

It would be great if that would work, but flashing a recovery does not work. I flash it, success message, try to access it, vibrates and bootloader pops back instantly. That is the problem.

Sorry for double post, but can anyone help me with this? This is the second day I struggle to make it work. Any chance to make the hboot locked again? It didn't work with oem lock command. I would like to lock it so I can put an official zip on sdcard so the hboot to restore it to factory stock, some RUU. Or get it s-off so I can flash a rom from fastboot? The phone does not have any ROM on it, image crc results system 0x0, recovery 0x0. Please, help!

Have you tried sideloading twrp ?

McBad said:
Sorry for double post, but can anyone help me with this? This is the second day I struggle to make it work. Any chance to make the hboot locked again? It didn't work with oem lock command. I would like to lock it so I can put an official zip on sdcard so the hboot to restore it to factory stock, some RUU. Or get it s-off so I can flash a rom from fastboot? The phone does not have any ROM on it, image crc results system 0x0, recovery 0x0. Please, help!
Click to expand...
Click to collapse
Did you use HTC fastboot ?

Yes, I used htc_fastboot. Use sideloading? Like boot the img file directly? Tried that too.

McBad said:
Yes, I used htc_fastboot. Use sideloading? Like boot the img file directly? Tried that too.
Click to expand...
Click to collapse
Is there any way you could flash twrp 2.8 again? Once in that recovery you have sideloading option which you could use to transfer latest recovery onto your device. Are we talking about the same process?

McBad said:
Yes, I used htc_fastboot. Use sideloading? Like boot the img file directly? Tried that too.
Click to expand...
Click to collapse
Sideload as follows ....

McBad said:
Hello everyone. I got a M8s from a friend wich is stuck in bootloader. The recovery didn't work at the begin, so I flashed twrp-recovery-2.8.6.0-m8s-qlul.img (flashing recovery using htc_fastboot.exe flash recovery theimagename.img) and it worked, then I tried to install a custom ROM Android_Pandora_Rom_1.2_(Discontinued).zip wich went all the steps fine until: Optimizing applications 8 of 204..then phone shat down to black screen. I booted back to bootloader, recovery, wiped and go for a new install, same issue.
After that, I was going to install lineage-13.0-20170715-UNOFFICIAL-m8qlul.zip where the developer of this rom recommends twrp-3.0.2-0-m8ql.img so I tried to flash it (flashing recovery using htc_fastboot.exe flash recovery theimagename.img), then tried to acces recovery, brings me back to bootloader so fast, rebooted bootloader, tried again, same problem. Tried the fasboot erase cache, no help.
The Hboot state is Unlocked and the S is ON. I tried some other recovery images, as stock_signed or 3.0.1, tried the one from M8 ToolKit but all failed and I still can't access recovery, everyting I do, it brings me back to bootloader. I did htc_fastboot boot recoveryfile.img wich works, but useless, the dd if= method to set the recovery permanent load did not work after reboot, /data and /system can't be mountet, it seems the "boot recovery" option is 99% readonly.
Any advice, any help please? It would be much appreciated! Thanks in advance!
Click to expand...
Click to collapse
You can't install lineage if you haven't upgraded your device with latest official update. I would try reinstaling twrp 2.8, do a wipe of cache, dalvik cache and system, Sideload CM 12; and see how it goes. As well, while in twrp I would try relocking bootloader but only after an unsuccessful attempt to flash said rom. I don't know what your experience with soft bricked devices is, but sometimes it takes a while, different usb cable or usb slot on your PC, correct files in adb folder, re-download of rom or recovery because it easily gets corrupted while downloading. And obviously a fully charged device. Let us know how it goes.

Unable to boot into TWRP recovery (twrp-3.2.3-1 dumpling/OOS 9.0.3 Pie)

Hey Guys,
somehow, I seem to be too dumb to install TWRP to my new dumpling. I did the following:
- run the official updates (9.0.3 Pie)
- unlock the bootloader using adb
- successfully flash the latest TWRP recovery (twrp-3.2.3-1 dumpling from their HP)
So far, no problems at all. Then I booted directly into recovery, so it won't be overwritten again: I tried unplug + Power/Volume Down, command "fastboot reboot recovery" and selecting recovery from the menu. But everytime I end up with the beautiful stock recovery, I never even saw the TWRP interface.
Any suggestions ? Any help would be much appreciated!!
My only idea: The latest TWRP is from 08/2018, maybe its not compatible to Pie ?!

_Kingo said:
Hey Guys,
somehow, I seem to be too dumb to install TWRP to my new dumpling. I did the following:
- run the official updates (9.0.3 Pie)
- unlock the bootloader using adb
- successfully flash the latest TWRP recovery (twrp-3.2.3-1 dumpling from their HP)
So far, no problems at all. Then I booted directly into recovery, so it won't be overwritten again: I tried unplug + Power/Volume Down, command "fastboot reboot recovery" and selecting recovery from the menu. But everytime I end up with the beautiful stock recovery, I never even saw the TWRP interface.
Any suggestions ? Any help would be much appreciated!!
My only idea: The latest TWRP is from 08/2018, maybe its not compatible to Pie ?!
Click to expand...
Click to collapse
hi dude, to stay on TWRP you have to flash MAGISK, if not TWRP will always be overwritten by the StockRecovery!!
flash TWRP
reboot into TWRP
flash Magisk within TWRP
reboot system
happy flashing!

nicorvienne said:
hi dude, to stay on TWRP you have to flash MAGISK, if not TWRP will always be overwritten by the StockRecovery!!
flash TWRP
reboot into TWRP
flash Magisk within TWRP
reboot system
happy flashing!
Click to expand...
Click to collapse
Hi, thanks, but I think you did not understand my problem: I can't reboot into TWRP. Instead I end up in stock, no matter what I do...

_Kingo said:
Hi, thanks, but I think you did not understand my problem: I can't reboot into TWRP. Instead I end up in stock, no matter what I do...
Click to expand...
Click to collapse
hi dude, sorry - now i got you
# after flashed TWRP unplug your device and reboot directly into the bootloader-mode (‘Volume Up’ + ‘Power’ button altogether) and navigate to 'Recovery' or
# fastboot boot 'recovery.img'
i recommend flashing twrp-3.2.3-x_blu_spark_v9.91_treble-op5_op5t.img : https://github.com/engstk/android_device_oneplus_cheeseburger/releases

SOLVED
I tried the 9.x recovery from this thread:
https://forum.xda-developers.com/oneplus-5t/development/recovery-twrp-3-2-1-0-oreo-8-0-8-1-t3729673
works like a charm!
I thougth, the official TWRP site would be the best source, but well... lesson learnt. Anyway, thanks for trying to help, nicorvienne

_Kingo said:
Hey Guys,
somehow, I seem to be too dumb to install TWRP to my new dumpling. I did the following:
- run the official updates (9.0.3 Pie)
- unlock the bootloader using adb
- successfully flash the latest TWRP recovery (twrp-3.2.3-1 dumpling from their HP)
So far, no problems at all. Then I booted directly into recovery, so it won't be overwritten again: I tried unplug + Power/Volume Down, command "fastboot reboot recovery" and selecting recovery from the menu. But everytime I end up with the beautiful stock recovery, I never even saw the TWRP interface.
Any suggestions ? Any help would be much appreciated!!
My only idea: The latest TWRP is from 08/2018, maybe its not compatible to Pie ?!
Click to expand...
Click to collapse
try this.
https://forum.xda-developers.com/oneplus-5t/development/root-install-twrp-xposed-framework-t3910141

Newbie needs help twrp
I am having the same problem and I have tried everything I unlock bootloader and flash TWRP successfully except I can never get into TWRP I try the key combo I tried to use the fastboot command all it does is it brings me back to fastboot mode how can I get to twrp with my new OnePlus 5T

[email protected] said:
I am having the same problem and I have tried everything I unlock bootloader and flash TWRP successfully except I can never get into TWRP I try the key combo I tried to use the fastboot command all it does is it brings me back to fastboot mode how can I get to twrp with my new OnePlus 5T
Click to expand...
Click to collapse
try to flash an older version of twrp through "ADB minimal fast boot".

I use Twrp and am not using Magisk or rooted.