Database Develop

Stock recovery always fail

Hi everyone,
I am looking for the way to start this phone directly on the fastboot mode as it is softbricked and it doesn't recognise anything (i can't go on recovery, no matter which one) after I flash a stupid update.app of 500 mb
I think I have to flash system.img boot.img and recovery.img
Thanks in advance, it don't go on the fastboot by himself like he did before, after i flashed twrp
Edit: Found, vol - & power while wired to the computer. Gonna see why i can't access even the stock recovery

Press and hold power and vol(-) buttons ... long time. Of course first remember to connecting device to PC by USB. [emoji14]
Hundreds times...it was described on this forum. [emoji26]
Sent from my HUAWEI P7-L10 using Tapatalk

New question, I installed the B121 full stock, rom, kernel, everything like when i baught him first day, except of my unlocked BL.
Now, the stock recovery can't install ANY update.app it always write "FAIL" without getting any %, it just fail as it start. I can't find the way to resolve this.
And I got many questions,
Can the recovery of B121 install the B609 ROM?
Can the B609 install B121? I mean how is the retrocompatibility working with this device/recovery?
In a update.app you got many files, boot.img, system.img but also 3rdmodem.img hifi.img modem.img...
What are those files? Why am I not allowed to flash them? Why I could start my device without flashing every files? They aren't necessary? Or they are generated by the "base rom" constitued of boot/system/cust/recovery/userdata?
Also, do I need to be rooted or something to boot on twrp? I can't boot on any other recovery except from B121, even if i extract one from update.app 609...
Thanks in advance

brick ...

Hello, sorry advanced my English is not good I have a problem with my L-10 ... its brick .. I don't have access recovery and I have wiped the room . thanks you . (I am french).

Enter fastboot mode by holding "Volume down" & " Power" buttons while your cable is connected to the computer.
Make sure that the USB drivers for P7 L-10 are installed by installing HiSuite from official Huawei website.
Now download ADB and fastboot here https://www.androidfilehost.com/?fid=24521665358595410
Now you'll need 2 more things - Official P7-L10 ROM & Huawei update extractor which you can download here http://forum.xda-developers.com/attachment.php?attachmentid=3262545
Once you have all of those we can start the fun with the command line
Once you're in fastboot mode you'll have either green LOCKED screen or red UNLOCKED screen. You need to have a red screen in order to send commands to your phone from fastboot.
Open ADB & Fastboot and type "fastboot devices" (without quotes, always without quotes) - this will tell you if your device is properly detected, if it is, you'll see bunch of numbers and letters.
Now you'll need to extract a couple of .IMG files from your official ROM. This is how you do it. Your official ROM has 1 single file that's called UPDATE.APP. Open Huawei Update Extractor and open UPDATE.APP in it.
You should see a whole list with different .IMG files. You'll need to extract only a couple. BOOT.IMG - RECOVERY.IMG - CUST.IMG - SYSTEM.IMG
Now that you've extracted them all you'll need to start flashing them 1 by 1. This is how we do it
fastboot flash recovery RECOVERY.IMG
fastboot flash boot BOOT.IMG
fastboot flash cust CUST.IMG
fastboot flash system SYSTEM.IMG
You can drag and drop the IMG file into fastboot for your conveniance.
Now you need to place the actual ROM in the root of your SDcard.
On your SDcard make a folder called dload and put UPDATE.APP in it.
Now force update by turning off your phone and then power it back on while holding all 3 buttons pressed in. When screen comes on release Power button, but keep holding the other 2 buttons down.
Now your recovery should start wiping and installing the ROM and you should be saved
Let me know if you need more help

Milan-XDA said:
Enter fastboot mode by holding "Volume down" & " Power" buttons while your cable is connected to the computer.
Make sure that the USB drivers for P7 L-10 are installed by installing HiSuite from official Huawei website.
Now download ADB and fastboot here https://www.androidfilehost.com/?fid=24521665358595410
Now you'll need 2 more things - Official P7-L10 ROM & Huawei update extractor which you can download here http://forum.xda-developers.com/attachment.php?attachmentid=3262545
Once you have all of those we can start the fun with the command line
Once you're in fastboot mode you'll have either green LOCKED screen or red UNLOCKED screen. You need to have a red screen in order to send commands to your phone from fastboot.
Open ADB & Fastboot and type "fastboot devices" (without quotes, always without quotes) - this will tell you if your device is properly detected, if it is, you'll see bunch of numbers and letters.
Now you'll need to extract a couple of .IMG files from your official ROM. This is how you do it. Your official ROM has 1 single file that's called UPDATE.APP. Open Huawei Update Extractor and open UPDATE.APP in it.
You should see a whole list with different .IMG files. You'll need to extract only a couple. BOOT.IMG - RECOVERY.IMG - CUST.IMG - SYSTEM.IMG
Now that you've extracted them all you'll need to start flashing them 1 by 1. This is how we do it
fastboot flash recovery RECOVERY.IMG
fastboot flash boot BOOT.IMG
fastboot flash cust CUST.IMG
fastboot flash system SYSTEM.IMG
You can drag and drop the IMG file into fastboot for your conveniance.
Now you need to place the actual ROM in the root of your SDcard.
On your SDcard make a folder called dload and put UPDATE.APP in it.
Now force update by turning off your phone and then power it back on while holding all 3 buttons pressed in. When screen comes on release Power button, but keep holding the other 2 buttons down.
Now your recovery should start wiping and installing the ROM and you should be saved
Let me know if you need more help
Click to expand...
Click to collapse
I flashed all the images you named, and after that I can't enter in recovery. Tried flashing twrp, still can't enter. Tried with power + vol+, nothing, tried with stock power + vol+vol-, still nothing. And access bootloader I can only with usb connected. Tried from another update.app, same result. Phone unlocked.

RocketDoge said:
I flashed all the images you named, and after that I can't enter in recovery. Tried flashing twrp, still can't enter. Tried with power + vol+, nothing, tried with stock power + vol+vol-, still nothing. And access bootloader I can only with usb connected. Tried from another update.app, same result. Phone unlocked.
Click to expand...
Click to collapse
Just yesterday i bricked my phone too and i've spend 18 hours unbricking it, until i realised that the version of TWRP is directly related to the version of EMUI that's on your phone. As i was trying to install the old B126 with EMUI 2.3 i had to use TWRP 2.8.1.0. Once i installed it, i was able to enter into recovery and erase all data in orded to start over. Maybe you have the same problem.
EMUI 2.3 - TWRP 2.8.1.0
EMUI 3.0 - TWRP 2.8.7.0
EMUI 3.1 - TWRP 3.0.0.0
Try using TWRP that matches your EMUI version and let me know if it works for you

Milan-XDA said:
Just yesterday i bricked my phone too and i've spend 18 hours unbricking it, until i realised that the version of TWRP is directly related to the version of EMUI that's on your phone. As i was trying to install the old B126 with EMUI 2.3 i had to use TWRP 2.8.1.0. Once i installed it, i was able to enter into recovery and erase all data in orded to start over. Maybe you have the same problem.
EMUI 2.3 - TWRP 2.8.1.0
EMUI 3.0 - TWRP 2.8.7.0
EMUI 3.1 - TWRP 3.0.0.0
Try using TWRP that matches your EMUI version and let me know if it works for you
Click to expand...
Click to collapse
Well, somehow after posting I got working TWRP and got back to X-Rom, because for some reason, I can't install other custom ROM's, because of infinite bootloop. So I wanted to get back to stock firmware. So I tried all you steps and got bricked. For some reason, when I tried to install stock rom I got, "verifying install package" and after few seconds "FAIL". So I kinda stuck to one ROM

RocketDoge said:
Well, somehow after posting I got working TWRP and got back to X-Rom, because for some reason, I can't install other custom ROM's, because of infinite bootloop. So I wanted to get back to stock firmware. So I tried all you steps and got bricked. For some reason, when I tried to install stock rom I got, "verifying install package" and after few seconds "FAIL". So I kinda stuck to one ROM
Click to expand...
Click to collapse
I see that X-Rom is based on B125. Did you try flashing .IMG files from the same ROM or did you use some other?

Milan-XDA said:
I see that X-Rom is based on B125. Did you try flashing .IMG files from the same ROM or did you use some other?
Click to expand...
Click to collapse
I finnaly did it, week ago. I downloaded stock rom (don't remember which, but recovery started working). Then I just "forced update" with latest full rom. and now I have B852. :fingers-crossed:
My main problem was that stock recovery would not work, but I managed somehow to get it done and after that point it was all nice and clean. Thanks for helping out!

RocketDoge said:
I finnaly did it, week ago. I downloaded stock rom (don't remember which, but recovery started working). Then I just "forced update" with latest full rom. and now I have B852. :fingers-crossed:
My main problem was that stock recovery would not work, but I managed somehow to get it done and after that point it was all nice and clean. Thanks for helping out!
Click to expand...
Click to collapse
That's great news, I'm glad I could help. I'm rocking B852 too with TWRP 3.0.0.0 like a boss :highfive:

Hard Brick L-19

Hello guys
Need your help or ideas
So i Hard Bricked my P9 i can only enter fastboot.
Phone was on Android N first build,flashed it with TWRP,but i dint have stock app likes camera calculator e.t.c
Phone was working OK but i whanted to get original camera.
So there was made TWRP for android N, i flashed it TWRP worked system was booting, but TWRP not mounting /data, so there was tuto for fix that.
Need to flash zip -> repair /data -> resize ( thats was begining of problem )
zip was success, but format and repair was with error 4
system not booting anymore stuck on bootloop, with twrp.
Tried re-flash N with TWRP dint helped . Only lost TWRP
So i flashed L19C432B136 with dload. update was success, but I don't know why system wast booting, there was no orginal recovery i can't enter it or update with dload.
Stuck in screen "Phone is unlocked and can't be trusted"
Flashing TWRP for MM or N is success but phone don't enter IT
Flashing stock recovery from B136 dint helped ( i tried stock recovery from B322 ; no success)
Tried flashing SYSTEM.img BOOT.img RECOVERY.img from 322, all is sucess but phone not skipping screen ( Phone is unlocked and can't be trusted )
Any idea how to get phone back from dead?
I can only enter fastboot.
Is i possible to flash something true fastboot?
I have full updates of L19C432B182 and L19C432B161.

richish said:
Hello guys
Need your help or ideas
So i Hard Bricked my P9 i can only enter fastboot.
Phone was on Android N first build,flashed it with TWRP,but i dint have stock app likes camera calculator e.t.c
Phone was working OK but i whanted to get original camera.
So there was made TWRP for android N, i flashed it TWRP worked system was booting, but TWRP not mounting /data, so there was tuto for fix that.
Need to flash zip -> repair /data -> resize ( thats was begining of problem )
zip was success, but format and repair was with error 4
system not booting anymore stuck on bootloop, with twrp.
Tried re-flash N with TWRP dint helped . Only lost TWRP
So i flashed L19C432B136 with dload. update was success, but I don't know why system wast booting, there was no orginal recovery i can't enter it or update with dload.
Stuck in screen "Phone is unlocked and can't be trusted"
Flashing TWRP for MM or N is success but phone don't enter IT
Flashing stock recovery from B136 dint helped ( i tried stock recovery from B322 ; no success)
Tried flashing SYSTEM.img BOOT.img RECOVERY.img from 322, all is sucess but phone not skipping screen ( Phone is unlocked and can't be trusted )
Any idea how to get phone back from dead?
I can only enter fastboot.
Is i possible to flash something true fastboot?
I have full updates of L19C432B182 and L19C432B161.
Click to expand...
Click to collapse
You have 2 choices with this.
If you can still boot into TWRP,
1. Flash the Beta Update.zip
2. Power off phone.
3. Press up button whilst powering up phone.
4. You will now be in stock recovery and you can perform a factory reset.
5. the device will now boot in to N beta but will be missing the vendor apps.
There is another way to fix if this doesn't work. Tell me if this method works first.
Edit: I just read in the op that you flashed the update and had stock recovery.
The reason it won't boot is because you need to have b322 flashed and you have to factory reset to repair the corrupt file system. To do this follow these instructions.
1. You need to flash the Boot, Recovery and System images from b322 in fastboot.
2. Then enter stock recovery (Vol + and Power)
3. Then factory reset (this is essential as it repairs the file system and enables boot)
4. The device will then boot.
5. (Optional )If you want to go back from the beta you have to flash the rollback.app to b300 through th dload method first then you can flash a Android 6.0 through the dload method.
Regards
Lee

thel2dab said:
You have 2 choices with this.
If you can still boot into TWRP,
1. Flash the Beta Update.zip
2. Power off phone.
3. Press up button whilst powering up phone.
4. You will now be in stock recovery and you can perform a factory reset.
5. the device will now boot in to N beta but will be missing the vendor apps.
There is another way to fix if this doesn't work. Tell me if this method works first.
Regards
Lee
Click to expand...
Click to collapse
Cant Enter TWRP
noone of recoverys work

richish said:
Cant Enter TWRP
noone of recoverys work
Click to expand...
Click to collapse
Edited my previous post with another method.

thel2dab said:
Edited my previous post with another method.
Click to expand...
Click to collapse
fast qestion
there is 2 recoverys, does both need to be flashed?

@richish
If you get really stuck I can teamviewer your pc and help.
Or you can facebook message me direct.
I had exactly the same issue when I first tried to flash the properdatafix with TWRP for N
Regards
---------- Post added at 10:26 PM ---------- Previous post was at 10:24 PM ----------
richish said:
fast qestion
there is 2 recoverys, does both need to be flashed?
Click to expand...
Click to collapse
You can flash both.
fastboot flash recovery recovery.img
fastboot flash recovery2 recovery2.img
I don't think it is essential but it won't hurt to do it anyway.
---------- Post added at 10:35 PM ---------- Previous post was at 10:26 PM ----------
[/COLOR @richish
I seen you PM. I am not sure it will wok by flashing B182. I think you have to flash B322 first.
Regards

fist you have to flash stock recovery from emui 5(android N) through fastboot.
second , download the rollback package,extract it and put it on dload folder of external storage.
third, turn off the phone , and press vol up + vol down + power button together to enter forced update mode.
if it is successful system will boot and you should flash android M firmware using dload method then u should unlock bootloader,install twrp,wipe /system /cache /data and then flash update.zip(android N) and hw_data of your firmware one after another.
i hope this help you.

still phone is not booting
I redownload b322, extracted Boot.img System.img Recovery.img Recovery2.img and Cust.img with
http://forum.xda-developers.com/showthread.php?t=2433454 Update Extractor
Flashed all .img true fastboot
But still nothing
Stuck on bootloader screen "Your device is unlocked, and can't be trusted"
Maybe i need flash some more images from b322.
Its look like phone cant pass bootloader.
Any sugestions?
P.S. Phone still have warranty, but booloader is unlocked
and fastboot oem relock ************** ends with failed.
"Failed - root cant trusted"
Sugestions how to lock it?

I had my phone bricked from testing cm, and going back to stock. My solution was to flash dload and recovery from the 182, followed by dload flash of 182.

@richish
caution : these commands will format the partition
can u use these command ?
"fastboot format /system"
"fastboot format /data"
or "fastboot erase /system"=> this will erase system partition

Phone is live now.
I downloaded DC-Phoenix and bought 15 credits
flashed stock B182 via DC-phoenix and phone booted.
I recomand this apllication for everybody who have similar problems.
THX for everybody who helpped.

richish said:
Phone is live now.
I downloaded DC-Phoenix and bought 15 credits
flashed stock B182 via DC-phoenix and phone booted.
I recomand this apllication for everybody who have similar problems.
THX for everybody who helpped.
Click to expand...
Click to collapse
How can i sign up for an account, it alway said wrong username or password !:crying:

DC-Phoenix is not cheap but it also cured my phone after bricking it with flashfire where all other methods did not work.
if you use it follow the instructions carefully and do the 2 step flashing although it will work after the first one. if you don`t do the second flash the partition sizes are wrong and a dload update will fail.

smartmobee said:
How can i sign up for an account, it alway said wrong username or password !:crying:
Click to expand...
Click to collapse
First u must buy credits, activate your account in email and then login in aplication.

Hi everyone
I would like to share the problem that i am having with my p9 , so maybe i can get your help.
Firstly i had L19C185 version and i changed Oeminfo in order to install c636 Beta 7.0 Nougat.
I installed the nougat but then realized that i dont have stock apps in my phone, so by mistakely tried to install TWRP for 6.0 Marshmallow and my problem started here.
Now my phone can not boot. its stuck in Phone is booting now ( the screen when you unlock bootloader after huawei logo) , and its never booting. it stays like that.
I tried to flash rboot.img , recovery.img and System.Img from fast boot. but whenever im trying to flash system.img after boot and recovery.img, a get an error and never succeeded to flash system.img. Im trying to flash these .img files from L19C636b180.
Can you please help me or give me some advice because none of mobile services couldnt fix and flash new software. maybe because they dont know exactly what should they do. and in my country i couldnt find anyofficial huawei service provider.
Please help me how to fix my phone.

I also had serious problems with flashing the thing back to stock.
TWRP was broken too for me.
I've done that to fix it all
The ONLY way that worked for me was
1. Download EVA-L19C636B168 from here http://forum.xda-developers.com/p9/development/rom-stock-rom-eva-l19c636b168-t3419586
2. Download that SRK tool http://forum.xda-developers.com/p9/development/tool-srk-tool-huawei-bootloader-root-t3374068
3. Flash the recovery from the SRK tool, you can do that with the tool or directly via fastboot (i don't know other proper source for the correct recovery img)
4. Put the image EVA-L19C636B168 (UPDATE.app) in the "dload" folder of your sd card
5. Start phone in dload mode (Hold all 3 buttons at start) and let the update do it's job

What about recovery??? Does 3 button combination works? Whats heppens if u hold volup and power button when turning phone on!
Situation looks similar what i had.
Only solution for me was dc-phoenix.
U have tu buy 15 points to flash phone (15eur) But it works.
I'm 99% sure that there are bootloader comands what is same as for dc-phoenix,but i dont know them.
Sent from my EVA-L19 using XDA-Developers mobile app

please help
i had bricked my p9 L09 twrp not working noting working only fastboot mode is working plzzz help me in finding boot.img recovery.img system.img

Corrupted partition - Global red magic 3 Rom phone

help me please. Phone RED MAGIC 3
I tried to install the custom ROM and my phone ended up corrupting the partition. I can't start in recovery mode, it is on that screen where you have the options: Restart, restart in recovery mode, restart in emergency recovery mode, Shut down. I downloaded the Chinese ROM, but in ZIP format. It has a lot of files, with boot.img and others in .img format, it also has the META-INF folder. How can I flash this ZIP to install the ROM? thanks

It looks like you did that without knowing enough about the procedure. The are a lot of guides explaining how to do it in the Red Magic 3 thread. Take a see about a solution.
Now, your problem is that you flashed the zip in the recovery without unlocking bootloader first. You must boot into the bootloader (the menu where you see that options to boot) and use the next fastboot commands (I won't explain about adb and fastboot. You have to download it and install them before use it. Look any guide on XDA):
Code:
fastboot oem nubia_unlock NUBIA_NX629J
At this step, you unlocked the bootloader temporally to flash any .IMG file
Code:
fastboot flashing unlock
You should see an advirtise screen that tells you about that your data is going to be fully wiped. Accept it and then you should be able to boot into the system and even into the recovery. To return to the global rom, simply flash the global rom (EU or NA) again. Don't lock the bootloader again or your phone will show you the same corruption screen. To flash the roms you don't have to uncompress the zip files you downloaded.
I hope that could be useful for you. Regards.

Perseo99 said:
It looks like you did that without knowing enough about the procedure. The are a lot of guides explaining how to do it in the Red Magic 3 thread. Take a see about a solution.
Now, your problem is that you flashed the zip in the recovery without unlocking bootloader first. You must boot into the bootloader (the menu where you see that options to boot) and use the next fastboot commands (I won't explain about adb and fastboot. You have to download it and install them before use it. Look any guide on XDA):
Code:
fastboot oem nubia_unlock NUBIA_NX629J
At this step, you unlocked the bootloader temporally to flash any .IMG file
Code:
fastboot flashing unlock
You should see an advirtise screen that tells you about that your data is going to be fully wiped. Accept it and then you should be able to boot into the system and even into the recovery. To return to the global rom, simply flash the global rom (EU or NA) again. Don't lock the bootloader again or your phone will show you the same corruption screen. To flash the roms you don't have to uncompress the zip files you downloaded.
I hope that could be useful for you. Regards.
Click to expand...
Click to collapse
Good Morning!
Thank you very much for the answers. I did all of these procedures via FASTBOOT, but I forgot to unlock the OEM, for this reason it corrupted. After it's corrupted, I do the OEM unlock procedure, however, when the file is ZIP (where it contains the startup items, META-INF) an error appears: file does not exist android.info.txt. This ZIP is for flashing via the system's internal memory, not via FLASHBOOT. As I cannot recover the recovery mode, I cannot update this ROM.zip. Is there another way to flash this zip? Sorry for the typo, I'm using google translator.

yurifonseca said:
Good Morning!
Thank you very much for the answers. I did all of these procedures via FASTBOOT, but I forgot to unlock the OEM, for this reason it corrupted. After it's corrupted, I do the OEM unlock procedure, however, when the file is ZIP (where it contains the startup items, META-INF) an error appears: file does not exist android.info.txt. This ZIP is for flashing via the system's internal memory, not via FLASHBOOT. As I cannot recover the recovery mode, I cannot update this ROM.zip. Is there another way to flash this zip? Sorry for the typo, I'm using google translator.
Click to expand...
Click to collapse
There is no much more options. There is only a way to flash the chinese rom for the phone and it's flashing the zip you downloaded in the recovery. If the message of "corrupted device" stills appearing before enter the flashing unlock fastboot command I recommend you to use he recovery tool that you could find in various of the threads about the Red Magic 3, but you should be able to boot the rom before the flashing unlock, I told you this because it happened to me in the same way.
If you are trying to flash the files of the different partitions in .img format, I have to tell that it's a little complicated because the zip doesn't contains a system.img, so you will halve to loose your data once to recover the phone...

Easy fix. Use the red magic 3 unbrick too. https://forum.xda-developers.com/red-magic-3/how-to/tool-nubia-red-magic-3-unbirck-tool-t3965044
Just follow the instructions in the tool zip.

Phone goes into fastboot mode after I reboot, can't get into system or recovery

My phone keeps getting stuck on fastboot mode.
I'll flash the standard MIUI ROM using the MiFlash Tool, then I flash a custom recovery and a custom ROM(EvolutionX in this case), everything works and I can set up my phone, but as soon as I reboot I can no longer boot into android or recovery. i've tried flashing multiple recoveries using fastboot and straight up booting a recovery using "fastboot boot recovery.img" but it still always go to fastboot. The only solution is to start the process all over again, and obviously that's just not an option since I can never turn my phone off after that.
Any tips?

I think I got it solved, at least I got it to reboot into Android and TWRP.
I used this guide, but I'll write the steps I took here in case you're having the same issue. I wound up using xiaomi.eu MIUI rom, but it shouldn't matter what you use, I'll assume you're stuck in fastboot.
Do "fastboot flash vendor vendor.img", you get this vendor.img from the fastboot version of the official MIUI ROM, after you decompress the .tar.gz it should be in the "images" folder
Do "fastboot flash recovery twrp.img" then "fastboot boot twrp.img", this should flash twrp as your recovery and then boot into it, for some reason it only worked with the official twrp, not orange fox.
Assuming you got into TWRP you should now flash the latest firmware(I got mine from xiaomifirmwareupdater.com) make sure you download just the firmware not the entire rom, mine was named something like fw_raphael_miui... .zip
Format data (not wipe, format, it's a separate option in TWRP), it should ask you to type yes, so do that.
Flash whatever ROM you want
Hopefully this helps you, I hate finding forum posts marked "solved" but with no instructions. I also tried the "vbmeta_dv_shivsom.img" method some threads mentioned but it didn't work
Here's a pastebin of the guide I used in case the original link goes down
You can get all the files I mentioned from xiaomifirmwareupdater.com and the official TWRP site

Out of all that, the one instruction that solves it is the format data step. This is the magic step required. You always need to do this when flashing over MIUI.
Flashing vendor was totally irrelevant.
This will tell you what you need to do.
Simple Guide to flashing successfully
Here's a quick guide to some of the basics. Which recovery. ---------------------------- Use the latest from here. https://forum.xda-developers.com/k20-pro/development/recovery-unofficial-twrp-xiaomi-redmi-t3944363/post79823568 Do not use Orange...
forum.xda-developers.com

Thanks a lot man! I'm having this issue and it is beyond annoying. I've lost so much time with this BS.
Edit: Does not help actually

I just had the same problem with my Lamentablet.
I was trying stuff up and restarted it in fastboot mode and got stuck there.
So, ways to deal with it:
adb reboot recovery
rebooted the tablet in recovery mode. All I had then was to press the power button to activate Reboot. Solved! From now on it boots normally.
Meanwhile I had discovered that by typing
fasboot continue
the tablet would resume, but at the next reboot cycle, power down + up cycle or reboot after a crash, the tablet would reboot into fastboot mode...
And I found this out when it crashed (it's not called a Lamentablet for nothing!).
Luckily I had a PC with Linux around. It didn't have the software installed but drivers were already in the Kernel and installing adb and fastboot was a matter of mere seconds. If I didn't have an easily ready PC at hand, this tablet would have become a brick until plugged in and rebooted...

OMG Thanks dude.... I'm literally working to installing custom rom on redmi 7a from stock rom but I don't know what reason that make my phone always stuck on fastboot when format data, before this was fine.

Osga21 said:
I think I got it solved, at least I got it to reboot into Android and TWRP.
I used this guide, but I'll write the steps I took here in case you're having the same issue. I wound up using xiaomi.eu MIUI rom, but it shouldn't matter what you use, I'll assume you're stuck in fastboot.
Do "fastboot flash vendor vendor.img", you get this vendor.img from the fastboot version of the official MIUI ROM, after you decompress the .tar.gz it should be in the "images" folder
Do "fastboot flash recovery twrp.img" then "fastboot boot twrp.img", this should flash twrp as your recovery and then boot into it, for some reason it only worked with the official twrp, not orange fox.
Assuming you got into TWRP you should now flash the latest firmware(I got mine from xiaomifirmwareupdater.com) make sure you download just the firmware not the entire rom, mine was named something like fw_raphael_miui... .zip
Format data (not wipe, format, it's a separate option in TWRP), it should ask you to type yes, so do that.
Flash whatever ROM you want
Hopefully this helps you, I hate finding forum posts marked "solved" but with no instructions. I also tried the "vbmeta_dv_shivsom.img" method some threads mentioned but it didn't work
Here's a pastebin of the guide I used in case the original link goes down
You can get all the files I mentioned from xiaomifirmwareupdater.com and the official TWRP site
Click to expand...
Click to collapse
thanks bro. flashing vendor after a format from twrp did the good