Flashing TWRP via Fastboot mode? - Samsung Galaxy A51 Questions & Answers

Hello
The first question is, does SM-A515F truly support Fastboot mode?
The second question is, can TWRP be flashed on this phone using Fastboot commands (if this exists)?

Yes, one can enter fastboot mode on SM-A515F, but it cannot be used for flashing anything

Related

Help with Fastboot

Basically, my xoom has been rooted and currently I have CynogenMod9 RC0 Wingray currently installed.
I wanted to install a new rom but I couldn't do this using CWM Recovery as the SD Card doesn't Mount. Upon doing some reading I found I need to install the Rogue (or EOS) Recovery image. This is where my problems begin as I can connect to the device when the xoom is fully booted in the CM9 and connected via debugging mode(running adb devices returns a sequence of numbers ).
But then when I reboot into the bootloader it gets stuck on "Starting Fastboot protocol support." and i can't connect via adb!!!
I believe this started happening after I unlocked the bootloader but i can't be 100% sure (fastboot oemunlock)
Please help!!!
When it is on fastboot mode you can only use fastboot commands (fastboot flash recovery recovery.img) that is how you would install the recovery image from rogue or EOS or TWRP, whichever you choose.
Or to make it easier, you can boot your tablet, install GOO Manager. When you open the GOO manager, tap the setting in the top right corner and choose Install Open Recovery script and let it install TWRP. Then boot to recovery.
Sent from my SGH-I747 using xda premium
d3athsd00r said:
When it is on fastboot mode you can only use fastboot commands (fastboot flash recovery recovery.img) that is how you would install the recovery image from rogue or EOS or TWRP, whichever you choose.
Sent from my SGH-I747 using xda premium
Click to expand...
Click to collapse
But it never gets into fastboot mode now.
miahmad said:
But it never gets into fastboot mode now.
Click to expand...
Click to collapse
You specifically said it says starting fastboot protocol. That's as far as it goes. You then issue fastboot commands, not adb commands
Sent from my SGH-I747 using xda premium
Moved to Q & A.
Sent from my Galaxy Nexus using Tapatalk 2
d3athsd00r said:
You specifically said it says starting fastboot protocol. That's as far as it goes. You then issue fastboot commands, not adb commands
Sent from my SGH-I747 using xda premium
Click to expand...
Click to collapse
Ohh ok, makes sense. I will give it a try later when i'm home. Is there a Fastboot command i can use to check the device is connected??
miahmad said:
Ohh ok, makes sense. I will give it a try later when i'm home. Is there a Fastboot command i can use to check the device is connected??
Click to expand...
Click to collapse
fastboot devices
miahmad said:
Basically, my xoom has been rooted and currently I have CynogenMod9 RC0 Wingray currently installed.
I wanted to install a new rom but I couldn't do this using CWM Recovery as the SD Card doesn't Mount. Upon doing some reading I found I need to install the Rogue (or EOS) Recovery image. This is where my problems begin as I can connect to the device when the xoom is fully booted in the CM9 and connected via debugging mode(running adb devices returns a sequence of numbers ).
But then when I reboot into the bootloader it gets stuck on "Starting Fastboot protocol support." and i can't connect via adb!!!
I believe this started happening after I unlocked the bootloader but i can't be 100% sure (fastboot oemunlock)
Please help!!!
Click to expand...
Click to collapse
These are what i use from day 1
INSTRUCTIONS TO FLASH & RE-LOCK YOUR MOTOROLA XOOM:
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
fastboot oem lock
---------------------------------------------------------------------------------------------------------------------
Type:
adb reboot bootloader
fastboot oem unlock
fastboot flash recovery eos-recovery-r6-softkeys.img
fastboot flash recoverytwrp-2.2.1-stingray_cdma.img
fastboot reboot
adb reboot recovery
-------------------------------------------------------------------------------------------------------------------------
Code:
adb reboot bootloader
fastboot oem unlock
fastboot reboot
3. Flash recovery
Code:
adb reboot bootloader
fastboot flash recovery recovery-Tiamat-R4c-100611-1150-cwm.img

[Completed] Recovery not available

Hi,
Device is: Asus Zenfone 2, Z008
At some point I managed to brick it. Restored it using xFstk and some fastboot magic.
Now, the big issue is, I cannot boot to recovery.
I can load bootloader (do fastboot commands), chose "Recovery", but it will just boot normal into the OS. Droid with hazard doesn't appear, just normal boot.
Tried (not all at once)
fastboot erase cache
fastboot format cache
installing twrp
flashing stock recovery.img
No joy.
What am I missing?
Video on Youtube with the issue: https://www.youtube.com/watch?v=ESnxjGDKwWA
Hi !
A quick answer has been provided here https://forum.xda-developers.com/showpost.php?p=71063211&postcount=598
Try this command after placing this recovery img into the adb folder and boot into bootloader
fastboot devices
enter
(check if it is recognised) then
fastboot boot recovery.img
( where recovery.img should be the exact name of your recovery you want to boot into)
Keep an eye on that thread you already have posted , more users may have replied
Good luck !

phone booting into default recovery even after flashing twrp (xiaomi redmi note 4)

whenever i try to go into recovery mode, it takes me to the default one even after i flashed twrp. my bootloader is unlocked and i flashed twrp several times. even when i use the command prompt from fastboot mode it still takes me to the default recovery. any ideas to what's wrong?
Asafbzm said:
whenever i try to go into recovery mode, it takes me to the default one even after i flashed twrp. my bootloader is unlocked and i flashed twrp several times. even when i use the command prompt from fastboot mode it still takes me to the default recovery. any ideas to what's wrong?
Click to expand...
Click to collapse
This could be a solution or a workaround:
"Hello i just had a personal experience with my Asus zenfone selfie Z00T Stock recovery kept replacing TWRP. (Boot loader already unlocked)
This is how i got around it i downloaded the latest TWRP for my device and placed directly in minimal adb and fastboot app folder then i renamed it to recovery .
then i put my device in fastboot mode using the buttons on the phone and After i ran minimal adb and fastboot app as admin then i typed fastboot flash recovery recovery.img
once done i then i typed fastboot boot recovery.img. and my phone booted to twrp recovery then i selected reboot recovery directly on my phone and to finish reboot system (still in twrp) that's it.
(OEM commands to boot from fastboot to recovery do not work on some devices )
it only worked for me eventually because i downloaded the latest TWRP from the official TWRP website.
The idea is to flash the custom recovery and then booting from the custom recovery.img that you just used to flash (the one still on the pc) using minimal adb and fastboot app.
IT may not work on all devices as the commands may change from one device to another but the idea stays the same. (example for nexus fastboot -c "lge.kcal=0|0|0|x" boot recovery.img)
I hope this will help some people out."
sill not booting into twrp
Tiqqy said:
This could be a solution or a workaround:
"Hello i just had a personal experience with my Asus zenfone selfie Z00T Stock recovery kept replacing TWRP. (Boot loader already unlocked)
This is how i got around it i downloaded the latest TWRP for my device and placed directly in minimal adb and fastboot app folder then i renamed it to recovery .
then i put my device in fastboot mode using the buttons on the phone and After i ran minimal adb and fastboot app as admin then i typed fastboot flash recovery recovery.img
once done i then i typed fastboot boot recovery.img. and my phone booted to twrp recovery then i selected reboot recovery directly on my phone and to finish reboot system (still in twrp) that's it.
(OEM commands to boot from fastboot to recovery do not work on some devices )
it only worked for me eventually because i downloaded the latest TWRP from the official TWRP website.
The idea is to flash the custom recovery and then booting from the custom recovery.img that you just used to flash (the one still on the pc) using minimal adb and fastboot app.
IT may not work on all devices as the commands may change from one device to another but the idea stays the same. (example for nexus fastboot -c "lge.kcal=0|0|0|x" boot recovery.img)
I hope this will help some people out."
Click to expand...
Click to collapse
i've just tried this but the 'fastboot boot recovery' command just turn the phone back on from fastboot. thanks anyways!
Tiqqy said:
This could be a solution or a workaround:
"Hello i just had a personal experience with my Asus zenfone selfie Z00T Stock recovery kept replacing TWRP. (Boot loader already unlocked)
This is how i got around it i downloaded the latest TWRP for my device and placed directly in minimal adb and fastboot app folder then i renamed it to recovery .
then i put my device in fastboot mode using the buttons on the phone and After i ran minimal adb and fastboot app as admin then i typed fastboot flash recovery recovery.img
once done i then i typed fastboot boot recovery.img. and my phone booted to twrp recovery then i selected reboot recovery directly on my phone and to finish reboot system (still in twrp) that's it.
(OEM commands to boot from fastboot to recovery do not work on some devices )
it only worked for me eventually because i downloaded the latest TWRP from the official TWRP website.
The idea is to flash the custom recovery and then booting from the custom recovery.img that you just used to flash (the one still on the pc) using minimal adb and fastboot app.
IT may not work on all devices as the commands may change from one device to another but the idea stays the same. (example for nexus fastboot -c "lge.kcal=0|0|0|x" boot recovery.img)
I hope this will help some people out."
Click to expand...
Click to collapse
Work for me. Thanks buddy
This works, thumb up
Asafbzm said:
i've just tried this but the 'fastboot boot recovery' command just turn the phone back on from fastboot. thanks anyways!
Click to expand...
Click to collapse
i have suffered with the same problem for hours until i decided to come here and look for related article , it actually worked and made me wonder that it wasn't that hard to fix it , i just rebooted fastboot and flashed twrp and in the end typed 'fastboot reboot recovery.img
that solved my suffering within 5 seconds. thank you for sharing the knowledge
Tiqqy said:
This could be a solution or a workaround:
"Hello i just had a personal experience with my Asus zenfone selfie Z00T Stock recovery kept replacing TWRP. (Boot loader already unlocked)
This is how i got around it i downloaded the latest TWRP for my device and placed directly in minimal adb and fastboot app folder then i renamed it to recovery .
then i put my device in fastboot mode using the buttons on the phone and After i ran minimal adb and fastboot app as admin then i typed fastboot flash recovery recovery.img
once done i then i typed fastboot boot recovery.img. and my phone booted to twrp recovery then i selected reboot recovery directly on my phone and to finish reboot system (still in twrp) that's it.
(OEM commands to boot from fastboot to recovery do not work on some devices )
it only worked for me eventually because i downloaded the latest TWRP from the official TWRP website.
The idea is to flash the custom recovery and then booting from the custom recovery.img that you just used to flash (the one still on the pc) using minimal adb and fastboot app.
IT may not work on all devices as the commands may change from one device to another but the idea stays the same. (example for nexus fastboot -c "lge.kcal=0|0|0|x" boot recovery.img)
I hope this will help some people out."
Click to expand...
Click to collapse
I had the same issue on Poco F1 and this worked for me as well! Pleasant surprise. First result on google was this article and it worked, 2 minutes work.
Lamantin001 said:
I had the same issue on Poco F1 and this worked for me as well! Pleasant surprise. First result on google was this article and it worked, 2 minutes work.
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Click to collapse
Okay, I was a bit too early with that. The next time I turned off the phone and tried booting to recovery (Vol up+pwr), I got booted into factory recovery (mi-recovery 3.0) :/
Lamantin001 said:
Okay, I was a bit too early with that. The next time I turned off the phone and tried booting to recovery (Vol up+pwr), I got booted into factory recovery (mi-recovery 3.0) :/
Click to expand...
Click to collapse
Update:
I found the solution. I followed the steps in this article:
How can I keep MIUI from overwrite TWRP with stock recovery after a ROM flash?
I'm on fw Global 9.6.6.0. (Bought the phone 'bogus' unlocked with "fake" 9.6.4.0, bricked it while trying to restore chinese fw and re-lock bootloader using miflash - I'm not doing that again brought it back to life using the steps from...
forum.xda-developers.com
Asafbzm said:
whenever i try to go into recovery mode, it takes me to the default one even after i flashed twrp. my bootloader is unlocked and i flashed twrp several times. even when i use the command prompt from fastboot mode it still takes me to the default recovery. any ideas to what's wrong?
Click to expand...
Click to collapse
Try this:
when you are in fastboot mode type:
Code:
fastboot boot recovery.img
This command will boot your phone to twrp. Install twrp .zip file (there are 2 options when installing .img or .zip)
after this go to ADB/Sideload - This is in Advanced section
Then swipe to start a sideload. Now on your pc type:
Code:
adb sideload recovery.zip
This worked for me. I hope this works for you too

fastboot mode

Hello everyone I have a little problem because after unlocking the bootloader and install the twrp via the fastboot command and subsequently install a custom rom my phone starts only in fastboot mode that do thank you to you
You may need to reflash twrp zip after installing the custom rom.

Question TWRP IS NOT BOOTING IN REALME C2 EVEN AFTER FLASHING IT SUCCESSFULLY

hello xda. my phone realme c2 and I unlocked its bootloader and then flashed twrp using the command "fastboot flash recovery twrp.img". It was written finished but when I tried to enter twrp, it entered to stock recovery. I have even used fastboot flash boot recovery recovery.img command, but still it didn't work. plz help
fastboot reboot recovery (rui) or fastboot oem reboot-recovery (Cos)
same problem
im realme 7
twrp flashed but not booting recovery
after long time goes to stock recovery
how to fix it ?
Are you using Realme UI or ColorOS?

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