Update from VIE-L29C636B360 to B362+ - Huawei P9 Plus Questions & Answers

Situation
Currently I am running VIE-L29C636B320, with EMUI 5 and Android 7.0. The phone is runs fine
So when I am to install , boot to recovery mode:
It gives
"Your device is booting now... "
And stuck there forever. I can get my phone back to working state by rebooting 3 times.
I tried the following methods..
> using dload+**#*#2846579#*#*, )
> I currently cannot boot into TWRP at all (I am using TWRP3.1.1 for Huawei p9 plus already), and all the key combinations doesn't work.
> Firmware Finder with Proxy Add-on
> fastboot flash reccover twrp.img (phone oem unlocked already)
> Huawei e-recovery does not detect any packages to download.
So I suspect something wrong with my img files..
My plan is:
Using Huawei Extractor to extract all img's (system, boot custom and recovery) from B360
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot flash cust cust.img
fastboot flash system system.img
It took me a while to get to where I am now from EMUI 4.1. What I don't want to is lose my working phone and make my phone completely useless.
So my question is, are the above steps no u-turn and I would completely screwed? Or safe to get those img's back and then I should be able to continue to upgrade from B320 to 362 and onwards?
Since I cannot boot into TWRP, I can't take backup of my phone..

Related

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:

Issues with flashing TWRP and rooting VIE-AL10

Firstly I need to say that I've read the forums from top to bottom before posting this, so I'm pretty sure no one here experienced this particular issue here on a P9 Plus at least.
I've tried tried to flash TWRP in order to be able to root my P9 Plus.
To do this I did the following steps:
1. Enable Developer Options in settings
2. Enable USB debugging
3. Successfully unlocked my bootloader using a code from Huawei
4. Entered fastboot mode and flashed the latest TWRP 3.1.1 recovery from their website
5. After Huawei's eRecovery kept opening I (after a suggestion in another post in the forums) flashed TWRP on recovery2 as well.
6. Phone stuck in "Your device is booting now..." screen and only booting in fastboot mode is working.
Any ideas what I've broken and how I could possibly fix it?
EDIT: At this point I'm willing to flash everything back to stock, however I'm not sure if I've got the VIE-AL10C00 or VIE-AL10BC00. I'm using the 64GB Dual SIM Chinese version of the phone with Android N and got both firmwares downloaded (updatebc183 for BC00 and 198 for C00 which are the latest for both versions) and ready.
EDIT2: I downloaded the correct latest full update 198 for my VIE-AL10C00 (as it turns out) and extracted the recovery and recovery2 images, then flashed them along with boot.img. Still having the same issue. (I need to say that in fastboot I can't flash anything other than recovery, recovery2 and boot images)

Bootloop Issue P7-L10

Hi guys, I'm completely newbie in Adroid stuff, and need help to get back my phone.
My software:
ROM Versio: V100R001C00B133SP01
EMUI: 2.3
KitKat​[/INDENT]
So, what I did before:
Unlock boot loader
Installed TWRP 2.8
Installed Kingo Root
Got rooted
Installed Super SU​
My issue:
Following the article, posted on this thread link, I got some some errors, then I tried by myself extract boot, cust, system and recovery from Huawei Extractor for ROM: Sophia-L10_V100R001C00B621_Firmware_West%20European%20Region_Others_Android%204-2 and ran the following commands using ADB:
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash cust cust.img
fastboot flash system system.img​
After doing this, my phone got in boot loop, I did some search here, and found a force recovery method (putting B133 ROM on SD root directory DLOAD folder and tried force update without sucess.
Does anyone any suggestion to get my phone back?
By the way, my final gola is got Lollipop or Marshmallow working on this phone if it can be alive again
Thank you,
Ivan

[Stock Rom] PRA-LX1C109 - Factory reset stuck at 99%

Hi Guys,
I haven't find so far (after reading hundreds of threats here and there) a clear solution to my problem.
To make it short :
Last EMUI update to 5.0.1 on my PRA-LX1C109B131 caused GPS instability.
I reported to Huawei France support but did not get any answer apart from launching a factory reset.
So I decided to install an alternative ROM.
I first unlocked the bootloader and taped OEM unlock from the developer's menu -> OEM Unlocked (FRP Unlock in Fastboot) and Bootloader was Unlocked
From instruction from a spanish forum I installed TWRP from Revolution Project (fastboot flash recovery TWRP_3.0.3-0_RevolutionRecoveryNougat_RC2.img).
From TWRP, I installed the ROM_MIDGARD_3V3.0_P8-P9LITE2017.zip backup.
This has fixed the GPS issue !
But I thought it could be nice to re-install a stock ROM and downgrade from C109B131 to C109B120.
I downloaded PRA-LX1C109B120-FullOTA-MF zip packages ("update.zip", "update_data_full_public.zip" et "PRA-L11_orange_all/update_full_PRA_orange_all.zip")
I unzipped the 2 first packages to get the UPDATE.APP file.
From the UPDATE.APP file I got BOOT.img, RECOVERY.img et SYSTEM.img and CUST.img
Then from fastboot :
fastboot flash boot BOOT.IMG -> success
fastboot flash recovery RECOVERY.IMG -> success
fastboot flash system SYSTEM.IMG -> success
fastboot flash cust CUSTOM.IMG -> success
fastboot reboot
From Huawey recovery, I did a wipe/cache and then a factory reset / wipe data.
Then installation starts ang get stuck at 99%
I left the phone for about 15/20 minutes.
In the end I re-installed the Midgard ROM and restored my data.
I'd like to know if I did something wrong or if I missed something.
Perhaps I need to flash recovery2 file.
I saw that some say I need to unlock again the bootlaoder although it is shown as unlock.
Please advise.
DamageINC_54590 said:
Hi Guys,
I haven't find so far (after reading hundreds of threats here and there) a clear solution to my problem.
To make it short :
Last EMUI update to 5.0.1 on my PRA-LX1C109B131 caused GPS instability.
I reported to Huawei France support but did not get any answer apart from launching a factory reset.
So I decided to install an alternative ROM.
I first unlocked the bootloader and taped OEM unlock from the developer's menu -> OEM Unlocked (FRP Unlock in Fastboot) and Bootloader was Unlocked
From instruction from a spanish forum I installed TWRP from Revolution Project (fastboot flash recovery TWRP_3.0.3-0_RevolutionRecoveryNougat_RC2.img).
From TWRP, I installed the ROM_MIDGARD_3V3.0_P8-P9LITE2017.zip backup.
This has fixed the GPS issue !
But I thought it could be nice to re-install a stock ROM and downgrade from C109B131 to C109B120.
I downloaded PRA-LX1C109B120-FullOTA-MF zip packages ("update.zip", "update_data_full_public.zip" et "PRA-L11_orange_all/update_full_PRA_orange_all.zip")
I unzipped the 2 first packages to get the UPDATE.APP file.
From the UPDATE.APP file I got BOOT.img, RECOVERY.img et SYSTEM.img and CUST.img
Then from fastboot :
fastboot flash boot BOOT.IMG -> success
fastboot flash recovery RECOVERY.IMG -> success
fastboot flash system SYSTEM.IMG -> success
fastboot flash cust CUSTOM.IMG -> success
fastboot reboot
From Huawey recovery, I did a wipe/cache and then a factory reset / wipe data.
Then installation starts ang get stuck at 99%
I left the phone for about 15/20 minutes.
In the end I re-installed the Midgard ROM and restored my data.
I'd like to know if I did something wrong or if I missed something.
Perhaps I need to flash recovery2 file.
I saw that some say I need to unlock again the bootlaoder although it is shown as unlock.
Please advise.
Click to expand...
Click to collapse
You can try find a full twrp backup and restore it following instructions in this forum, i dont know if the twrp b182 backup its valid for you, search about this and good luck!
Enviado desde mi PRA-LX1 mediante Tapatalk
Thanks for this but I'd like to know first why the factory reset remains at 99%
I know for sure the build build C109B120 I downloaded is fully compatible with my P8 lite 2017 so it should be no problem re-flashing it.
Since the last EMUI official update to version 5.0.1 a lot of users (at least on French, Italian and Spanish forum) reported some GPS issue (signal is lost after 15/20 minutes). Rebooting the device fix this.
No official fix yet from Huawei.
EDIT : another bug was also reported regarding wifi slow transfer rate when blutooth is activated.
I tested myslef and confirm that on my device if blutooth is activated wifi transfer rate drops down from 3/4 Mb per s. to less than 100kb / s.
DamageINC_54590 said:
Hi Guys,
I haven't find so far (after reading hundreds of threats here and there) a clear solution to my problem.
To make it short :
Last EMUI update to 5.0.1 on my PRA-LX1C109B131 caused GPS instability.
I reported to Huawei France support but did not get any answer apart from launching a factory reset.
So I decided to install an alternative ROM.
I first unlocked the bootloader and taped OEM unlock from the developer's menu -> OEM Unlocked (FRP Unlock in Fastboot) and Bootloader was Unlocked
From instruction from a spanish forum I installed TWRP from Revolution Project (fastboot flash recovery TWRP_3.0.3-0_RevolutionRecoveryNougat_RC2.img).
From TWRP, I installed the ROM_MIDGARD_3V3.0_P8-P9LITE2017.zip backup.
This has fixed the GPS issue !
But I thought it could be nice to re-install a stock ROM and downgrade from C109B131 to C109B120.
I downloaded PRA-LX1C109B120-FullOTA-MF zip packages ("update.zip", "update_data_full_public.zip" et "PRA-L11_orange_all/update_full_PRA_orange_all.zip")
I unzipped the 2 first packages to get the UPDATE.APP file.
From the UPDATE.APP file I got BOOT.img, RECOVERY.img et SYSTEM.img and CUST.img
Then from fastboot :
fastboot flash boot BOOT.IMG -> success
fastboot flash recovery RECOVERY.IMG -> success
fastboot flash system SYSTEM.IMG -> success
fastboot flash cust CUSTOM.IMG -> success
fastboot reboot
From Huawey recovery, I did a wipe/cache and then a factory reset / wipe data.
Then installation starts ang get stuck at 99%
I left the phone for about 15/20 minutes.
In the end I re-installed the Midgard ROM and restored my data.
I'd like to know if I did something wrong or if I missed something.
Perhaps I need to flash recovery2 file.
I saw that some say I need to unlock again the bootlaoder although it is shown as unlock.
Please advise.
Click to expand...
Click to collapse
I posted this procedure on a French forum and got feed-back. It works.
Perhaps i dont't wait enough time when the EMUI installation process reaches 99%.
I forced the shutdown of the device by pressing the power button after approximatively 20 minutes

Honor 9 Lite Disastrous Brick - Unrecoverable?

I managed to brick my Honor 9 Lite while attempting to root it, and it seems that all recovery methods have failed. Is there any way to restore back to stock firmware, or should I just give up and put it through a shredder? Here's what happened:
1. Set up as a new device and successfully unlocked the bootloader
2. Installed unofficial TWRP build via fastboot
3. Attempted to install SuperSU, which failed at decompression stage
4. Flashed a "System-Mode" SuperSU, which appeared to succeed
5. When rebooting, the device hangs at the "Honor" boot logo and never successfully enters the home screen
There are a few things to note at this point:
- The TWRP build may have been faulty, as none of the user preferences would save properly
- Before attempting to root, I tried to make a TWRP backup multiple times, and every time it failed with error 255, probably because TWRP itself was faulty, hence I have no backup to restore to
Here's what I've tried to recover the system:
- Entered eRecovery, connected to Wi-Fi but it could not gather package info from their servers
- Downloaded the stock firmware package and saved it to the correct location on the micro SD card, attempting to install it via the "three-button" mode would begin the process but fail at 5%, with an "install failed" message
- Connected to HiSuite in fastboot mode, attempting to recover results in a "your device is not supported" message
- Visited the URLs displayed on the device in each of the recovery mode failure screens, they're all dead links (Huawei reorganising their website?)
- Used TWRP to wipe cache, Dalvik cache before repeating above steps
- Attempted a factory reset, still stuck at the boot animation
- Re-locked the boot loader and retried the above steps
- Flashed LineageOS via TWRP, it just stays at the Lineage boot animation for 10 minutes before automatically rebooting to eRecovery
- Copied the stock update.zip to the SD card and attempted to flash via TWRP, it just fails
- Extracted the parts from update.app and manually flashed each to the device via fastboot, still gets stuck on the boot animation
Is there anything else I should try before giving up and tossing it in the trash?
Edit:
I bought this thing yesterday, it lasted a grand total of less than 12 hours before bricking. There's no important data on it whatsoever, so I don't care if anything needs to be formatted.
My guess: if You can flash los than do it and flash stock recovery after that. Worked for me.
Info needed :
- Bootloader unlocked
- FRP unlock
- What's your Build ( example: LLD-L31C432B131 / LLD-L31 8.0.0.131/C432) )
If bootloader and FRP unlock and you can boot to bootloader : it's a little problem
You need your Build FULL-Update.
Extract with "UpdateExtractor" : ramdisk.img + recovery_ramdis.img + system.img
Extractor do automatic for all *.img the *.img.header / you have now 6 files
copy this 6 files in your "adb"-folder / boot to bootloader / go to your "adb"-folder
- fastboot flash ramdisk ramdisk.img
- fastboot flash recovery_ramdisk recovery_ramdis.img
- fastboot flash system system.img
reboot
if this work : your phone have now stock-ROM and boot as "new"-phone (format data, initial-settings ...)
if this not work (recovery stop at 5%) you have chance "2"
look this : https://forum.xda-developers.com/ho.../recovery-bkl-nocheck-recovery-flash-t3778085
reed the instruction
if you understand and can do this it's the same result : at the end your phone boot with stock-ROM
with this way i have my Honor 9 Lite reset to stock-ROM
JamesBott said:
Info needed :
- Bootloader unlocked
- FRP unlock
- What's your Build ( example: LLD-L31C432B131 / LLD-L31 8.0.0.131/C432) )
If bootloader and FRP unlock and you can boot to bootloader : it's a little problem
You need your Build FULL-Update.
Extract with "UpdateExtractor" : ramdisk.img + recovery_ramdis.img + system.img
Extractor do automatic for all *.img the *.img.header / you have now 6 files
copy this 6 files in your "adb"-folder / boot to bootloader / go to your "adb"-folder
- fastboot flash ramdisk ramdisk.img
- fastboot flash recovery_ramdisk recovery_ramdis.img
- fastboot flash system system.img
reboot
if this work : your phone have now stock-ROM and boot as "new"-phone (format data, initial-settings ...)
if this not work (recovery stop at 5%) you have chance "2"
look this : https://forum.xda-developers.com/ho.../recovery-bkl-nocheck-recovery-flash-t3778085
reed the instruction
if you understand and can do this it's the same result : at the end your phone boot with stock-ROM
with this way i have my Honor 9 Lite reset to stock-ROM
Click to expand...
Click to collapse
Thanks for your response, my device is both FRP and bootloader unlocked, build LLD-L31C432B127.
I have already tried manually flashing ramdisk, ramdisk recovery, and system, however it is still bootlooping.
I have also tried the HWOTA method, however there is no su. I am also not able to access adb, only fastboot. Previously adb would work at the boot animation, however now nothing appears when I type adb devices.
You have to be in TWRP to use adb, if I remember right.
I think, you ar the same problem as i for many week.
If you can - check following : download this TWRP https://forum.xda-developers.com/9-lite/development/recovery-twrp-3-2-1-0-t3789306
flash TWRP, boot to recovery "USB-Wire out phone, press and hold Vol-Up and Power, if phone restart less Power, on bootscreen less Vol-Up.
now start TWRP.
if you setting PIN for screen-unlock TWRP write on start "input code for decrypt" : you can now over-step
in TWRP go to reboot, boot system.
now 2 possibility : 1= system boot, 2= phone boot to TWRP
check this please and give answer, what phone doing
JamesBott said:
I think, you ar the same problem as i for many week.
If you can - check following : download this TWRP https://forum.xda-developers.com/9-lite/development/recovery-twrp-3-2-1-0-t3789306
flash TWRP, boot to recovery "USB-Wire out phone, press and hold Vol-Up and Power, if phone restart less Power, on bootscreen less Vol-Up.
now start TWRP.
if you setting PIN for screen-unlock TWRP write on start "input code for decrypt" : you can now over-step
in TWRP go to reboot, boot system.
now 2 possibility : 1= system boot, 2= phone boot to TWRP
check this please and give answer, what phone doing
Click to expand...
Click to collapse
Thank you so much!
While a direct boot from TWRP did not work, completely migrating the HWOTA files and then booting into the "no-check" recovery successfully forced an update, and the system was properly restored. The device is now up and running and I was able to root it. Sadly, TWRP still doesn't make backups properly, so I will have to be careful.
ok : now you have 99% stock-ROM
the last 1% is "encrypted data".
if your data is "encrypted" is a little security for you (is phone lost)
i hope you use the TWRP from Pretorian80
first now set PIN for screen-unlock (no fingerprint, no other)
check this : tap on power, phone go stand-by, tap on power, phone wake up and need PIN
next do : flash stock-recovery, boot to recovery and wipe data AND recovery do low-level format data
flash TWRP, boot to TWRP and this write "give me the PIN for decrypt"
if this - your data now encrypted
if this not - other way : boot to bootloader
fastboot flash stock-recovery
fastboot erase userdata
reboot phone, stock-recovery format data low-level
flash TWRP and check
now give answer what work and what NO
only stock-recovery can format data WITH encryption - i do not know another way
on a brand new phone with NO PIN setting the TWRP write "i use the standard code for decrypt"
is a PIN set the TWRP write "give me the PIN for decrypt"
the best on this "little" bootloop : you learning your phone understanding
I found this useful tool, just in case someone need to recover his device.
https://forum.xda-developers.com/honor-9/development/tool-flash-official-firmware-recovery-t3769279
You only need to be able to access TWRP and have aN update.zip with a full OTA

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