Develop Bugs

[Q] fastboot stuck

i have just flashed a new recovery, and everything is just fine until i typed this:
fastboot reboot
and it does not reboot fastboot,stucks on first screen but!
pull out battery and entering by hardware key works, all fastboot, bootloader, my ROM, the new recovery.
so that confuses me, i can enter manually, but by adb i cant?

ADB works at the Bootloader and Recovery.
Fastboot works at the Fastboot mode.
Fastboot != ADB
Different commands, different purpose.
If you need reboot to fastboot command is:
"fastboot reboot-bootloader"
"fastboot reboot" just reboots your phone.

Zenfone 2 ver 2.17.40.12 bootloops after flashing Wrong TWRP

TWRP recovery request fastboot command
I tried to flash twrp.img on my Zenfone 2 ver 2.17.40.12 (rooted). I guess there was a version mismatch, because I ended up with the screen saying "Fastboot cmd waiting". I am allowed to power down and normal boot, which work, but options "recovery mode" and "restart bootloader" return me back to the same screen saying Fastboot cmd waiting.
I tried to do a factory reset, but I got the same screen and nothing else. I downloaded ZIP file with the correctoriginal recovery for my version and tried to use fastboot command update, but it failed with message saying that archive does not contain android-info.txt and neither android-product.txt.
I will appreciate your advice to resolve my problem.

Well, fastboot is showing error because you're trying to flash ZIP file for the recovery mode(like TWRP) that doesn't have compatibility with fastboot mode.
You have to flash the .img file for your zenfone2(Z00A or Z008) with the command below.
Code:
fastboot flash recovery twrp.img
And also, model number(Z00A or Z008) is shown on the screen when booting in fastboot mode.

Stuck at Fastboot and KFHD Restore not working

Hey guys,
My KFHD8.9 had stuck in fastboot (after a RED SCREEN showed up for a second) for quite a few days. And none version of KFHD_SRTv1.2.0-1.3.5 worked to make it back - 1.2.0 not even work to be exact.
I followed several xda posts like https://forum.xda-developers.com/showthread.php?t=2495741
to solve this, but seems not working.
I'll appreciate if anyone can help out.
Thanks

Assume that you have fastboot driver installed, KFHD_SRT_v2.1.zip, boot.img and recovery.img for 8.1.4.
You can follow these steps to downgrade to 8.1.4;
1. Power off your KFHD.
2. run [fastboot -i 0x1949 getvar product] and connect KFHD, this will put your KFHD in fastboot mode
3. run [SR Tool.bat] within KFHD_SRT_v2.1 folder. and choose option 2 or 3. (I prefer option 2)
4. After flashing 8.1.4 to your KFHD, don't reboot, you have to downgrade your bootloader and recovery as well.
5. Run [fastboot -i 0x1949 flash boot boot.img] to inject 8.1.4 bootloader
6. And run [fastboot -i 0x1949 flash recovery recovery.img] to inject recovery
7. Finally run fastboot -i 0x1949 reboot
Wait for a while and you will have KFHD 8.1.4 with root enabled, thanks to onemeila.
KFHD System.img Recovery Tool by onemeila
After this you can update to the latest 8.5.1 and gain root via iroot.
Now I'm happy with Nougat (unofficial CM14.1 by transi1)
P.S. Sorry, I can't remember where I fetched boot.img and recovery.img of 8.1.4, you have to find it yourself.

This works.
Thanks ong14. Your method saved my Kindle from its soft brick.

Moto Z Play reboot on TWRP instead of ROM (if I don't go by fastboot before booting)

Hi there,
I've got a problem with my Moto Z Play. It is unlocked with lastest unofficial TWRP, bootloader unlocked and running lastest Lineage OS ROM.
I already checked these type of threads:
https://forum.xda-developers.com/moto-z-play/help/booting-recovery-automatically-t3654698$
which gives a solution (doing some fastboot commands) but it doesn't work for me.
So I tried to do this in fastboot mode
" adb reboot bootloader
fastboot oem fb_mode_set
fastboot oem fb_mode_clear
fastboot erase cache
fastboot reboot "
But it didn't change anything. I need to boot on fastboot mode and then push power button while selecting start to get it runs on ROM.
Is anyone has a solution?

paknex said:
Hi there,
I've got a problem with my Moto Z Play. It is unlocked with lastest unofficial TWRP, bootloader unlocked and running lastest Lineage OS ROM.
I already checked these type of threads:
https://forum.xda-developers.com/moto-z-play/help/booting-recovery-automatically-t3654698$
which gives a solution (doing some fastboot commands) but it doesn't work for me.
So I tried to do this in fastboot mode
" adb reboot bootloader
fastboot oem fb_mode_set
fastboot oem fb_mode_clear
fastboot erase cache
fastboot reboot "
But it didn't change anything. I need to boot on fastboot mode and then push power button while selecting start to get it runs on ROM.
Is anyone has a solution?
Click to expand...
Click to collapse
I faced the same issue ... Tried many things but simple solution worked like a charm
Flash twrp ... Re boot phone ... Don't boot to system instead boot to recovery ..then shutdown from recovery ... That's it twrp is permeant and phone boots to system normally

Tried this but still boots to recovery. Thanks for the idea.

Can't install Lineage recovery

I did everything on https://wiki.lineageos.org/devices/ginkgo/install , I flashed the recovery, on the Prompt I get "okay" to both Sending and Writing, and on "Now reboot into recovery to verify the installation" my phone is still on fastboot, so I press for a long time the power button to (force?) shut down it, use volume_up+power and what I see is the "Redmi-Recovery 3.0" (stock recovery).
Is it possible to have 2 recovery and I simply don't know how to access the LOS one? Maybe I could have more luck installing TWRP and overwriting it with LOS recovery (how to?)?
From fastboot if I write "fastboot reboot recovery" right after "fastboot flash recovery ..." prompt says "Rebooting into recovery...okay" but then the normal OS is loaded.
If I use
Code:
adb reboot bootloader
I access to the stock fastboot, and from there
Code:
fastboot boot recoveryimagename.img
says
Code:
fastboot: error: cannot load 'lineage-17.1-20201228-recovery-ginkgo.img': No such file or directory
. If I use it from MIUI-OS:
Code:
< waiting for any device >
and Prompt is waiting there.
I have fastboot and recovery image in the same folder but with
Code:
fastboot flash recovery *recovery*
I get
Code:
fastboot: error: cannot load 'lineage-17.1-20201228-recovery-ginkgo.img': No such file or directory
, infact I used full path (full of the img file, not the adb/fastboot which I properly installed) instead of relative, giving the "okay", and after that with
Code:
fastboot boot lineage-17.1-20201228-recovery-ginkgo.img
I get
Code:
fastboot: error: cannot load 'lineage-17.1-20201228-recovery-ginkgo.img': No such file or directory
!
Only now I've seen I was writing from root Prompt and therefore from "C:\WINDOWS\system32>", I used "cd platform-tools_path" and (after
Code:
fastboot flash recovery lineage-17.1-20201228-recovery-ginkgo.img
)
Code:
fastboot boot lineage-17.1-20201228-recovery-ginkgo.img
worked, but now the phone is stuck here!! From prompt everything seems ok. The phone is stuck on the normal loading boot after that "fastboot boot..."! Before I even tried installing TWRP...maybe that was too much? Now?
I used again "fastboot boot lineage-17.1-20201228-recovery-ginkgo.img" and it seems to working...maybe in a couple of minutes(hours probably) I'll mark this as solved!

Ok, I think everything is good now, but I have a question: is it possible to have more than one recovery installed?

BEDBOI2 said:
is it possible to have more than one recovery installed?
Click to expand...
Click to collapse
it is possible on other devices, but until now not possible on ginkgo