Develop Bugs

Trying to install TWRP but the phone keeps overwriting it

Trying to install TWRP v3. Phone is unlocked (not rooted yet as not necessary atm). I'm able to sucesfully push the .img to the sdcard via adb and install via "fastboot flash recover twrp.img" but the moment I reboot the phone and try to access recovery to get into TWRP, all I get is a little icon of an android mascot lying down with his belly open. No TWRP.
I know the phone will auto-overwrite custom recovery's if the correct combination of hardware buttons are not pressed after the first TWRP install (as TWRP needs to patch the default recovery the first time to stop the phone from constantly trying to overwrite TWRP every time) but so far i've not been able to find out what it is (i.e. not the usual vol +- and power all at the same time. Its gotta be something else?).
Edit: Delete his post. I figured it out. Turns out it isn't a good idea to execute "fastboot reboot" immediately after TWRP installation

Don't restart the Phone!
Flash Recovery and the do the following:
Use the volume keys to scroll and power key to select the Reboot Bootloader option. Once the phone has booted back into the bootloader you can use the volume keys to scroll and the power key to boot into your newly flashed recovery. It's now safe to disconnect your usb cable.

Need some advice....

I tried to root my phone and followed all steps until it asked to boot into the custom recovery and that only displayed a blackscreen and if I tap on the screen the phone vibrated. I cannot boot into bootloader as the phone just automatically tries to enter recovery with blackscreen.
Hold all buttons the phone boots normally and can use the phone as usual.
I've tried to use the adb and fastboot cmds to restore and factory reset but just reboots and tries to enter recovery with the blackscreen.
My device is htc_a51ul if that helps.
Thanks,
Phatzy

Tighten two volume buttons and the power button when you see a black screen and holding down the volume- and power button that would go to zagruzchik.Telefon must be connected to kompyuteru.Esli got to go to the boot loader, boot into download sistemu.Esli not work then you have forgiven stock rekaveri of loader. https://yadi.sk/d/nWnRAChBnEtxG

I think you have flashed a wrong recovery ,first thing to do now is flash stock recovery and whether if it is working fine if so then flash the proper version of twrp 2.8.7.0 is recommended and see if it works
I had the same issue when I first flashed twrp on lollipop but then I did the above and now everything is fine.

while its on the blackscreen only adb commands work. If i try fastboot commands its just waiting for device and phone dont respond. I cannot get into bootloader at all with volume keys or with adb command.
Many thanks for suggestions.

Ok I have now managed to get bootloader back and I can now enter the stock recovery but when I enter recovery it has a red triangle. Is there anyway to remove this?
Thanks.

Tried flashing CM13, now can't enter normal boot

So I already had a rooted (and I'm pretty sure unlocked bootlader) version of the stock Asus and wanted to put CM13 nightly on there. Everything was going smooth until I got to the stage where I have to load into TWRP and I got the error screen with the little dead alien and the red symbol.
Now I can't enter normal boot, but entering recovery mode seems to work. I tried the option to side load a package from ADB on that screen but nothing worked (.zip files extracted, but I got an error on the phone).
As you can tell, I'm really new to this so any help would be greatly appreciated. I tried looking around, but it seems the more common issue is people not being able to enter recovery mode or something similar.
Thanks

Looks like your doing it wrong. Being rooted does not necessarily mean that your bootloader is unlocked.
By the looks of it your in recovery mode with the dead robot with the "error" message. That is normal. To reboot back into system you either have to press (I don't remember) power button and volume up or down button. Then you should see some options with reboot to system. Or if that does not work you can hold the power button till it turns off.
Then you get back into Android, download the official bootloader unlock tool from ASUS and install it on your device. NOTE: If you updated to MM then this will not work and this will void your warranty.
Run the tool and press unlock and it should reboot into fastboot where it should begin the unlocking process. I believe it should automatically reboot and you should see that the Asus logo is now black instead of white. If not, repeat the process.
You can now proceed to flash twrp recovery. Boot into fastboot/bootloader mode either with "adb reboot bootloader" or hold a specific set of buttons while off to go directly into fastboot.
On the computer, connect your device and type in "fastboot flash recovery (path to twrp IMG without brackets)"
When done you should be able to reboot into twrp recovery where you can flash the cm13 zip.
Hope this helped.

[SOLVED] Swift stuck on boot, no recovery, fastboot works

Hello there,
we have here a Swift that is stuck on a starting screen since an attempt to downgrade from Cyanogenos 13.1 to Cyanogenmod 12.1. Bootloader ist unlocked and to my knowledge only the recovery was flashed via fastboot.
As soon as the USB cable is connected, the screen goes on with "Wileyfox(with logo) powered by android" and remains there.
Luckily fastboot works, but I can't get into recovery. Neither by selecting "reboot into recovery" from fastboot nor by "Vol-" + "Power".
I tried to reflash Cyanogenos 13 via fastboot as it was suggested in several threads (i.e. unzip and flash the different files step by step). Fastboot always stated success, but no luck... Still the same starting screen.
I even tried flashing TWRP recovery, no change either.
Is there something else I can try?
Thank you all
SOLVED: I was persistent: one other threads regarding a lenovo phone suggested to hold down Power and VolDn continuously for several minutes. After about a minute or so and multiple (min. 15x) power off/ons to the "powered by android" screen, I finally got into TWRP! After a format /data I was able to flash the desired CM.
I hope this helps others with similar problems

Erdbeerfrosch said:
Hello there,
we have here a Swift that is stuck on a starting screen since an attempt to downgrade from Cyanogenos 13.1 to Cyanogenmod 12.1. Bootloader ist unlocked and to my knowledge only the recovery was flashed via fastboot.
As soon as the USB cable is connected, the screen goes on with "Wileyfox(with logo) powered by android" and remains there.
Luckily fastboot works, but I can't get into recovery. Neither by selecting "reboot into recovery" from fastboot nor by "Vol-" + "Power".
I tried to reflash Cyanogenos 13 via fastboot as it was suggested in several threads (i.e. unzip and flash the different files step by step). Fastboot always stated success, but no luck... Still the same starting screen.
I even tried flashing TWRP recovery, no change either.
Is there something else I can try?
Thank you all
SOLVED: I was persistent: one other threads regarding a lenovo phone suggested to hold down Power and VolDn continuously for several minutes. After about a minute or so and multiple (min. 15x) power off/ons to the "powered by android" screen, I finally got into TWRP! After a format /data I was able to flash the desired CM.
I hope this helps others with similar problems
Click to expand...
Click to collapse
I've got the same problem. How id you solve yours?

I did hold the VolumeDown+Power buttons for 5 minutes and I did not get into recovery at all (this was with latest TWRP version 3.1.1-0)
Then I thought it could be the TWRP version, and I tried 3.0.3-0 and finally 3.0.0-0.
After flashing 3.0.0-0 I typed "fastboot reboot" and immediately after pressed VolumeDown+Power on the phone and ... finally was in recovery mode, where I could install microG's lineageos version.

cweiske said:
I did hold the VolumeDown+Power buttons for 5 minutes and I did not get into recovery at all (this was with latest TWRP version 3.1.1-0)
Then I thought it could be the TWRP version, and I tried 3.0.3-0 and finally 3.0.0-0.
After flashing 3.0.0-0 I typed "fastboot reboot" and immediately after pressed VolumeDown+Power on the phone and ... finally was in recovery mode, where I could install microG's lineageos version.
Click to expand...
Click to collapse
hi could you post exactly what you did line by line inc code plz i have twrp 3 img just need to get it over i must be typing something wrong.
thanks

im having a problem, my phone wont go out of fast boot mode, tried everything
Any suggestions??

Here is the correct fix, at least it worked for me,
https://forum.xda-developers.com/showpost.php?p=66158015

[Help] Softbricked phone

[HELP] I unlocked the bootloader, did a live boot into TWRP and followed the steps- it wouldn't let me decrpyt the data partition, so I hit cancel, clicked agree on the next screen and then I was in the TWRP recovery. I attempted to reboot the phone without making any changes, at which point it just spins away trying to reboot but doesn't (after several minutes). It doesn't appear I can get into the recovery mode or the bootloader either- the screen flashed on and off "no command" and the volume + pwr button do nothing. I can however still get into fastboot and windows recognizes it. Is there a way to flash the factory image from here? Will the steps in this video get me back to factory?
https://www.youtube.com/watch?v=bqvr5kHwxlw&t=98s

Yes, You can restore your stock system with this process 100%.
Then you can add your further process like root or TWRP or Custom ROMs