Database Users

[GUIDE] How flash stock rom/restore twrp backup/reanimate mate7 for noob

Hi all again. Today i write guide for noob
How Flash Stock rom???
1. First download rom to your pc
2. When you download rom open in winrar and check pack
3. If you have only one file update.app you can extrack but first you must create in desktop folder named dload and extract there.
4. If you have root and want flash full rom you can do it but you must have stock recovery.
5. Copy dload to your extsdcard and go to dialpad and write *#*#2846579#*#* and choise 4 and 1.
6. Your phone now power off and flash new firmware.
7. When its finish your phone boot again with new firmware.
P.s Flash firmware for your region or you be have bootloop or software brick and if you have you must have unlocked bootloader to reanimate your mate7
How Flash Ota update???
1. Download Ota update to your pc
2. Open using winrar and check do you have all folder and file look for exsample
cust
META-INF
patch
system
update.app
3. If you have that same folder do not extract from update.zip
4. Create dload on desktop and copy there update.zip and now copy to your extsdcard and go to dialpad and write *#*#2846579#*#* and choise 4 and 1.
5. Your phone now power off and flash new firmware.
6. When its finish your phone boot again with new firmware.
How restore twrp backup ???
1. If you have lollipop you must use pc to create folders:
TWRP/BACKUPS/ here you must put downloaded backup
2. If you have marshmallow you must use pc to create folders:
TWRP/BACKUPS/YOUR SERIAL NUMBER/ and here you must put downloaded backup
3. Download backup for your mate7 and extraxt to desktop
4. Copy all file to create folder and now copy TWRP folder to your internal sdcard or ext sdcard.
5. Power off your phone and go to TWRP RECOVERY
6. Select storege where you copy backup and now go restore.
7. If you see backup you can now restore.
8. Whene its restore go back and do it wipe data/cache/dalvick cache and reboot
9. First boot can make very long time and wait when in boot to system.
P.s When you use TWRP 2.8.7.X and do ot wipe data you lose your file and vendor country but when you use TWRP 3.0.2.0 you don't lose. If you lose you must restore using tool from this topic but you must be root
http://forum.xda-developers.com/mate-7/development/tool-srk-tool-huawei-beta-02-20160501-t3369990
How to reanimater your mate after bootloap???
We have 2 methode for now.
Firts it's restore twrp backup and secend its fastboot and downgrade pack
If you use twrp backup and its work very good for you but if dont work you must use fastboot method
1. Power off device and go to fastboot
2. Extract file from update.app for lollipop :
- system
- cust
- boot
- recovery
- userdata
for Marshmallow extract :
- system
- cust
- boot
- recovery
3. Install adb drive from this topic
http://forum.xda-developers.com/showthread.php?p=48915118
and copy all file to C:/adb on your windows
4. Open CMD as administator and write this commads
cd C:/adb
adb fastboot
Now you on fastboot mode
When you extract file frome update.app you must rename file :
10.boot.img to boot.img
11.recovery.img to recovery.img
13.cust.img to cust.img
14.system.img to system.img
If you remane you can flash img file using fastboot methode using cmd
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash cust cust.img
fastboot flash system system.img
It's take very long but wait. When its finish take micro sd adapter and put you micro sdcard and connect to pc and copy full rom :
If you use lp file because you have bootloop on lp you must flash that same rom what you flash file using fastboot
and do it that same for marshmallow
when you copy put your adapter to slot of microsdcard in your mate7
Now power of your phone and try go to flash method using 3 bottom on you mate7
VOL+ POWER + VOL- when you seescreen on realese power and wait. Now you see how rom its flash.
If you have error you must use downgrade pack from mm to lp and flash.
When its flash you must flash lp.
If you have error you must use downgrde pack from lp to kk and flash.
When its finish you must flash kk rom.
Now you back to rom after bootloop and you can try again flash rom what you want.
Finish guide for noob
Cheers :highfive:

Thanks for the guide. I want to restore to MM from kk using twrp? Is it possible? I only wait 5 minutes after restore reboot then I think something must be wrong so I restore my own backup. I will give a try again.
Sent from my HUAWEI MT7-L09 using XDA-Developers mobile app

No you can't do it you must first flash kk second lp and then you flash mm
Wysłane z mojego HUAWEI MT7-L09 przy użyciu Tapatalka

chudy_85 said:
How restore twrp backup ???
1. If you have lollipop you must use pc to create folders:
TWRP/BACKUPS/ here you must put downloaded backup
2. If you have marshmallow you must use pc to create folders:
TWRP/BACKUPS/YOUR SERIAL NUMBER/ and here you must put downloaded backup
3. Download backup for your mate7 and extraxt to desktop
4. Copy all file to create folder and now copy TWRP folder to your internal sdcard or ext sdcard.
5. Power off your phone and go to TWRP RECOVERY
6. Select storege where you copy backup and now go restore.
7. If you see backup you can now restore.
8. Whene its restore go back and do it wipe data/cache/dalvick cache and reboot
9. First boot can make very long time and wait when in boot to system.
P.s When you use TWRP 2.8.7.X and do ot wipe data you lose your file and vendor country but when you use TWRP 3.0.2.0 you don't lose. If you lose you must restore using tool from this topic but you must be root
http://forum.xda-developers.com/mate-7/development/tool-srk-tool-huawei-beta-02-20160501-t3369990
Click to expand...
Click to collapse
Hi buddy, your guide is gold. I explain what i did up to now. I wanna know how to proceed safely.
1) 2 year old MT7-L09 Mate 7. Long time ago i go bootloader unlocked, rooted and updated to lollipop stock. dont know which firmware version.
2) TWRP 2.8.7.0. Wanted to factory reset after long time no using the phone, ended up wiping OS and god knows what else.
3) Can access fastboot and TWRP.
4) Tried stock recovery and 3 button method to downgrade or install stock update.app. Nothing worked it always got stuck at 90%.
Up to there nothing worked. I guess i must have damaged some critical files.
Then i found your guide and wanted to try making a lollipop restore from TWRP. Found a file.
Now, if i understood what you have written in red, i may have wiped oem information like country and vendor. Maybe thats because i cant install stock from huawei.
How can i restore that info? is there any way i can backup my bootloader info, or retrive my country and vendor info?
How do you suggest me to proceed safely.
Thanks
Sebastian

lungolok said:
Hi buddy, your guide is gold. I explain what i did up to now. I wanna know how to proceed safely.
1) 2 year old MT7-L09 Mate 7. Long time ago i go bootloader unlocked, rooted and updated to lollipop stock. dont know which firmware version.
2) TWRP 2.8.7.0. Wanted to factory reset after long time no using the phone, ended up wiping OS and god knows what else.
3) Can access fastboot and TWRP.
4) Tried stock recovery and 3 button method to downgrade or install stock update.app. Nothing worked it always got stuck at 90%.
Up to there nothing worked. I guess i must have damaged some critical files.
Then i found your guide and wanted to try making a lollipop restore from TWRP. Found a file.
Now, if i understood what you have written in red, i may have wiped oem information like country and vendor. Maybe thats because i cant install stock from huawei.
How can i restore that info? is there any way i can backup my bootloader info, or retrive my country and vendor info?
How do you suggest me to proceed safely.
Thanks
Sebastian
Click to expand...
Click to collapse
You can manual push oem info to correct partition. What country you from

chudy_85 said:
You can manual push oem info to correct partition. What country you from
Click to expand...
Click to collapse
Im form Argentina. Phone was bought in US. I dont mind putting any country version as long as i can bring it back alive.
Luckily i have saved phone imei, serial number and id in evernote. Maybe that can help to figure it out.
Do you have a procedure or guide to do that you are suggesting?

if you have unlocked bootloader you can try use SRKToolHuawei-Lod-Chong-V2.0-20161002 to change oem info and then try flash correct your rom using dload method. But if you change region you must unlock again bootloader but when you go to fastboot you have unlocked. Unlock again because its locked

Accidentally deleted OS - how to fix?

Today, I installed TWRP and rooted my device. I tried to install Xposed but I couldn't get passed the logo screen after rebooting. To try and fix this I did an advanced wipe and got rid of everything...
I know this was very stupid! TWRP is telling me there is no OS if I try to reboot. Is there a ROM I can install to fix this? I was on the stock MM rom and have L31 version.

LeChuck85 said:
Today, I installed TWRP and rooted my device. I tried to install Xposed but I couldn't get passed the logo screen after rebooting. To try and fix this I did an advanced wipe and got rid of everything...
I know this was very stupid! TWRP is telling me there is no OS if I try to reboot. Is there a ROM I can install to fix this? I was on the stock MM rom and have L31 version.
Click to expand...
Click to collapse
I made the same mistake at some point, but managed to get it back up and running.
Download the correct version of "update.zip" for your phone.
In my case it is a L31C432 so I looked for a file called something like VNS-L31C432B160 (stock MM).
Download this (EU version) (if you have a L31C432)
Once the download is completed, rename the downloaded file to "update.zip".
While in Recovery on your phone, and it's connected to your pc, copy the "update.zip" to either the phone's internal memory or the sdcard (doesn't matter).
Grab your phone and go into "Install" in your recovery and find your "update.zip" file.
Slide and let it install it.
Once done, reboot.
Viola!
Remember the "Thanks" button if it helped :good:

SnowmanDK said:
I made the same mistake at some point, but managed to get it back up and running.
Download the correct version of "update.zip" for your phone.
In my case it is a L31C432 so I looked for a file called something like VNS-L31C432B160 (stock MM).
Download this (EU version) (if you have a L31C432)
Once the download is completed, rename the downloaded file to "update.zip".
While in Recovery on your phone, and it's connected to your pc, copy the "update.zip" to either the phone's internal memory or the sdcard (doesn't matter).
Grab your phone and go into "Install" in your recovery and find your "update.zip" file.
Slide and let it install it.
Once done, reboot.
Viola!
Remember the "Thanks" button if it helped :good:
Click to expand...
Click to collapse
Excellent, thank you! For some reason I had no way of signing into my Google account with that version, however I found a previous version in another thread on here and that works perfectly. Thanks.

how to open the recovery mode ????

Hi, why when I try to install the zip it says invalid zip format? I'm trying to install it from a TWRP

spyrkle said:
Hi, why when I try to install the zip it says invalid zip format? I'm trying to install it from a TWRP
Click to expand...
Click to collapse
It's meant to be unzipped and then flashed with the dload method. Hope that helps :good:

Back to stock using fastboot

Hi, since i'm not confident with adb/fastboot commands, i'm asking help for restoring the original firmware and recovery in my MLA-L11.
I've downloaded the two files from Firmware Finder (i'm sure 100% they are the right one) but i don't know how to proceed. Anyone can help there? Thank you

GertFromTheWell said:
Hi, since i'm not confident with adb/fastboot commands, i'm asking help for restoring the original firmware and recovery in my MLA-L11.
I've downloaded the two files from Firmware Finder (i'm sure 100% they are the right one) but i don't know how to proceed. Anyone can help there? Thank you
Click to expand...
Click to collapse
Hey!
You have to go back to EMUI 4.1 by restoring a TWRP backup and then you will update to EMUI 5. Ive used the following process on my CAN-L11 and worked fine. It should work on all models. @virusdunil has followed the same process on his MLA-L03 and everything went fine.
Let me know if you experience some trouble during this process.
Go back to EMUI 4.1 (MM)
1) Download this TWRP backup of MM: https://forum.xda-developers.com/showpost.php?p=73003510&postcount=60.
2) You can put the backup to internal memory or sdcard, After you've chose where you wanna put it, take a backup of boot.img with TWRP to internal/sdcard (where you wanna put the backup), so you'll get a folder with this structure: TWRP > BACKUPS > FPFDU16A20001907 (you'll have different number I guess). Then you'll put the twrp backup folder (which you have downloaded) in that folder with numbers
3) Boot in TWRP, wipe system, data, cache, dalvik cache from twrp > wipe > advanced and then you restore the backup from TWRP > restore (restore only system + data + boot). Then you reboot and you're good to go.
Click to expand...
Click to collapse
Now update to EMUI 5 (N)
After youve downloaded the stock firmware using Firmware Finder, you should have two files:
- update.zip
- update_data_full_CAN-L11_hw_eu.zip (example)
Backup your internal memory as it will be wiped at step 8).
1) Extract update.zip. Then you get UPDATE.APP.
2) Download Huawei Update Extractor.
3) Open Huawei Update Extractor, choose UPDATE.APP from the folder where youve extracted it. Right click RECOVERY.img and extract it.
4) Now boot your phone in fastboot mode by pressing and holding the power and the volume down buttons at the same time.
5) Type in terminal / command prompt on PC to flash the stock recovery which youve extracted at step 3):
Code:
fastboot flash recovery recovery.img
.
6) Reboot.
7) Put update.APP in a folder called dload on your sdcard.
8) Dial *#*#2846579#*#* and choose Sofware Upgrade > SDCard Upgrade. Now EMUI 5 will be installed, bootloader gets relocked and internal memory gets wiped. Now wait about 5 mins (maximum 10 mins). If the phone isnt booting within that time, then boot the phone in stock recovery by pressing and holding power and volume up buttons and choose "Wipe data / factory reset" and then "Wipe cache partition". After you reboot, the phone should boot. Skip the setup wizard.
9) Remove update.APP from dload folder from your sdcard and extract the other zip (example update_data_full_CAN-L11_hw_eu.zip) and put all the files/folders extracted in dload folder.
10) Dial *#*#2846579#*#* and choose Sofware Upgrade > SDCard Upgrade.
11) You are done.
Click to expand...
Click to collapse
To fix the themes app on EMUI 5, you can check this thread.
PS: im sorry for the missing apostrophe, but im not used to add that from PC keyboard. In fact, i dont even know how to add it, i think i need to change keyboard settings (language).

#Henkate said:
Hey!
You have to go back to EMUI 4.1 by restoring a TWRP backup and then you will update to EMUI 5. Ive used the following process on my CAN-L11 and worked fine. It should work on all models. @virusdunil has followed the same process on his MLA-L03 and everything went fine.
Let me know if you experience some trouble during this process.
Go back to EMUI 4.1 (MM)
Now update to EMUI 5 (N)
.
6) Reboot.
7) Put update.zip in a folder called dload on your sdcard.
8) Dial *#*#2846579#*#* and choose Sofware Upgrade > SDCard Upgrade. Now EMUI 5 will be installed, bootloader gets relocked and internal memory gets wiped. Now wait about 5 mins (maximum 10 mins). If the phone isnt booting within that time, then boot the phone in stock recovery by pressing and holding power and volume up buttons and choose "Wipe data / factory reset" and then "Wipe cache partition". After you reboot, the phone should boot. Skip the setup wizard.
9) Remove update.zip from dload folder from your sdcard and place the other zip there (example update_data_full_CAN-L11_hw_eu.zip.
10) Dial *#*#2846579#*#* and choose Sofware Upgrade > SDCard Upgrade.
11) You are done.
To fix the themes app on EMUI 5, you can check this thread.
PS: im sorry for the missing apostrophe, but im not used to add that from PC keyboard. In fact, i dont even know how to add it, i think i need to change keyboard settings (language).
Click to expand...
Click to collapse
Love you, i'll try ASAP.

#Henkate said:
Hey!
You have to go back to EMUI 4.1 by restoring a TWRP backup and then you will update to EMUI 5. Ive used the following process on my CAN-L11 and worked fine. It should work on all models. @virusdunil has followed the same process on his MLA-L03 and everything went fine.
Let me know if you experience some trouble during this process.
Go back to EMUI 4.1 (MM)
Now update to EMUI 5 (N)
To fix the themes app on EMUI 5, you can check this thread.
PS: im sorry for the missing apostrophe, but im not used to add that from PC keyboard. In fact, i dont even know how to add it, i think i need to change keyboard settings (language).
Click to expand...
Click to collapse
Hi robert, i succesfully downgraded to MM and restored (i guess) stock recovery. But when I try to upgrade to nougat via sdcard upgrade the phone can't find the update.zip file.
Maybe the problem is my phone believe he is a CAN instead of a MLA, and don't recognize a MLA update.zip file?

If that is the case, you need to use the firmware extractor and "fastboot flash system system.img" to get your build.prop back. That would get your device to recognize as what it is.

wangdaning said:
If that is the case, you need to use the firmware extractor and "fastboot flash system system.img" to get your build.prop back. That would get your device to recognize as what it is.
Click to expand...
Click to collapse
I found the issue, I had to unzip the update.zip tp UPDATE.app file in dload folder. The phone got bootloop at first flash, but wiping all solved the problem. Now i'm back to stock with proper build number, thanks @wangdang and @#Henkate for your support :victory:

GertFromTheWell said:
Hi robert, i succesfully downgraded to MM and restored (i guess) stock recovery. But when I try to upgrade to nougat via sdcard upgrade the phone can't find the update.zip file.
Maybe the problem is my phone believe he is a CAN instead of a MLA, and don't recognize a MLA update.zip file?
Click to expand...
Click to collapse
GertFromTheWell said:
I found the issue, I had to unzip the update.zip tp UPDATE.app file in dload folder. The phone got bootloop at first flash, but wiping all solved the problem. Now i'm back to stock with proper build number, thanks @wangdang and @#Henkate for your support :victory:
Click to expand...
Click to collapse
I'm sorry, it looks like I've wrote update.zip instead update.APP and also at step 9). It was my fault .
I've updated the steps 7 and 9. Thank you!

#Henkate said:
Hey!
You have to go back to EMUI 4.1 by restoring a TWRP backup and then you will update to EMUI 5. Ive used the following process on my CAN-L11 and worked fine. It should work on all models. @virusdunil has followed the same process on his MLA-L03 and everything went fine.
Let me know if you experience some trouble during this process.
Go back to EMUI 4.1 (MM)
Now update to EMUI 5 (N)
To fix the themes app on EMUI 5, you can check this thread.
PS: im sorry for the missing apostrophe, but im not used to add that from PC keyboard. In fact, i dont even know how to add it, i think i need to change keyboard settings (language).
Click to expand...
Click to collapse
Can you please give me the backup of cust.img and product? or cust.img file and product? because when i try to restore twrp backup or 4.1
Failed to mount /product (invalid argument).
Failed to mount /cust (invalid argument). Got this error
and my phone stuck on unlocked bootloader option.
1: click power button to continues
2 click vol Up for Erecovery
3: will be boot into 5 seconds etc and when i click power button phone reboot and again these options

abuapka said:
Can you please give me the backup of cust.img and product? or cust.img file and product? because when i try to restore twrp backup or 4.1
Failed to mount /product (invalid argument).
Failed to mount /cust (invalid argument). Got this error
and my phone stuck on unlocked bootloader option.
1: click power button to continues
2 click vol Up for Erecovery
3: will be boot into 5 seconds etc and when i click power button phone reboot and again these options
Click to expand...
Click to collapse
Cust: https://www.mediafire.com/file/oncwuuob84ubisy/cust_backup.zip
Product: http://www.mediafire.com/file/el054rk7a6tuya2/product_backup.zip
The backups are from N partitions.

#Henkate said:
Cust: https://www.mediafire.com/file/oncwuuob84ubisy/cust_backup.zip
Product: http://www.mediafire.com/file/el054rk7a6tuya2/product_backup.zip
The backups are from N partitions.
Click to expand...
Click to collapse
N partitions? Nougat ?

abuapka said:
N partitions? Nougat ?
Click to expand...
Click to collapse
Yes.

#Henkate said:
Yes.
Click to expand...
Click to collapse
THanks Bro.
Thanku so Much
Got My Phone back to stock 4.1 but its CAN
Before It was MLa-l11 By the way thanku so much

You sure you flashed stock MLA firmware?

no
wangdaning said:
You sure you flashed stock MLA firmware?
Click to expand...
Click to collapse
i didnt flash stock mla firmware i jus5 flashed 4.1 twrp backup

#Henkate said:
Hey!
You have to go back to EMUI 4.1 by restoring a TWRP backup and then you will update to EMUI 5. Ive used the following process on my CAN-L11 and worked fine. It should work on all models. @virusdunil has followed the same process on his MLA-L03 and everything went fine.
Let me know if you experience some trouble during this process.
Go back to EMUI 4.1 (MM)
Now update to EMUI 5 (N)
To fix the themes app on EMUI 5, you can check this thread.
PS: im sorry for the missing apostrophe, but im not used to add that from PC keyboard. In fact, i dont even know how to add it, i think i need to change keyboard settings (language).
Click to expand...
Click to collapse
hey how are you hope you fine
my mobile NOVA PLUS MLA11
i just bricked it and unbricked it by your method ( RESTORE TWRP BACKUP ) https://forum.xda-developers.com/nov...tboot-t3708585
now iam tring to get the correct firmware from huwaei finder but idont know wchich the correct one
because idont know my model (MLA-L11C"?????") idont know if it c185 or c432 !!
itried installlast one from c185 but it faild on 5%
thankss

Echtar said:
hey how are you hope you fine
my mobile NOVA PLUS MLA11
i just bricked it and unbricked it by your method ( RESTORE TWRP BACKUP ) https://forum.xda-developers.com/nov...tboot-t3708585
now iam tring to get the correct firmware from huwaei finder but idont know wchich the correct one
because idont know my model (MLA-L11C"?????") idont know if it c185 or c432 !!
itried installlast one from c185 but it faild on 5%
thankss
Click to expand...
Click to collapse
Hey!
I've got your PM, but I see that meanwhile you've posted here and you made a new thread too... You don't have to make so many posts, a post or a thread is enough to get the attention of someone.
In your case, the phone model is MLA-L11 and C185/C432 is the build number as far as I remember. You can check the build number in Settings > About phone. I don't know if there's any other way to check, if you're on other build number now and you don't know which one was yours.

#Henkate said:
Hey!
I've got your PM, but I see that meanwhile you've posted here and you made a new thread too... You don't have to make so many posts, a post or a thread is enough to get the attention of someone.
In your case, the phone model is MLA-L11 and C185/C432 is the build number as far as I remember. You can check the build number in Settings > About phone. I don't know if there's any other way to check if you're on other build number now and you don't know which one was yours.
Click to expand...
Click to collapse
iam on nrd90m test-keys

Echtar said:
iam on nrd90m test-keys
Click to expand...
Click to collapse
Post a screenshot of Settings > About phone as I don't really remember how it looks there.

Hi
I've managed to backup EMUI 4.1, however I'm getting error message "software install failed" trying to update EMUI to 5.0 (pops up, every time when it reach 5% progress).
Any idea how to fix it?
best regards

#Henkate said:
Now update to EMUI 5 (N)
Click to expand...
Click to collapse
Steps #9 and #10 do not work for me ("Software install failed"). But I wonder if they are necessary after all, because Product Id, IMEI, Build-number (and of course EMUI-Version and Android-Version) are stock again.
And isn't "update_full_CAN-L01_hw_eu.zip" supposed to be included in the "update.zip"-file? I thougt "update.zip" allready delivers every part of the ROM.

Stuck at ''Your device is booting now'' (bricked)

Hello,
This question has been posted before but I didn't find a solution on the previous threads.
My VNS-L31C432 doesn't boot past 'Your device is booting now'' after trying to install the C900B300 rollback package. The dload method, as well as the default recovery don't work either. I can access fastboot and flash another rom (using this method: https://forum.xda-developers.com/general/general/guide-flash-variant-version-firmware-t3506404), but so far nothing worked.
I can also install TWRP, access adb and shut down. I wiped everything from my phone in order to do a clean install, didn't work.
I was previously on Marshmallow (VNS-L31C432B161)
Any help would be greatly appreciated!

If your twrp works , try to install the rom with this method : https://forum.xda-developers.com/hu...ota-p9-lite-upgrade-rebrand-tools-pc-t3778839, it worked for me from soft brick. Download and try with FullOTA-MF-PV rom first.

lost3 said:
If your twrp works , try to install the rom with this method : https://forum.xda-developers.com/hu...ota-p9-lite-upgrade-rebrand-tools-pc-t3778839, it worked for me from soft brick. Download and try with FullOTA-MF-PV rom first.
Click to expand...
Click to collapse
Well holy sh** thank you so much!

I saw that you have single sim phone , so you must download rom with odd number ,try to download 391 version.
Download the HWOTA-VNS.zip file and unzip it. Copy the directory HWOTA-VNS to the root of your sd card.
When all of 3 files downloads find the one update_full_hw_xxxx zip (xxx is like e.g vns-l21c391 ) and rename it to update_all_hw.zip, copy the 3 files inside the HWOTA-VNS/upgrade directory.
Reboot to twrp and go to WIPE->Advanced wipe mark data and push Repair or Change File System, if writes: File System : ext4, live it , if its F2FS , hit Change File System and change it to ext4. Go back to main menu , go to install guide to HWOTA-VNS directory and install hwota_update.zip after that the phone will reboot and starts to update.

upgrade to Android Q & keep twrp and data

Ok here's what I did. To keep my data and twrp when upgrading from "P" to " Q".
1. I downloaded the OTA zip file.
2. Extracted it on your phone.
3. Edit the "Flash-all.bat" file
A. Delete "-w" from one of the last command lines.
B. Add "reboot-bootloader"
"fastboot boot twrp-3.2.3.1-marlin.img"
C. Hit "save"
C. Both the above command lines should be right
before the line "echo press any key to exit"
4. Add the twrp.img to the folder with the above extracted contents.
5. Edit "flash-all.sh" to read the same as you have just edited the "flash-all.bat" file. And then hit "save".
6. Compress the extracted file so as to create a .zip file again.
7. Move this .zip file to your PC.
8. Plug up your phone to your PC and make sure android debugging is active.
9. On your PC extract the .zip file you just created.
10. Make sure you have the twrp installer zip on your phone.
11. Go into the extracted .zip file and double click the "flash-all.bat" windows batch file and sit back and wait.
12. When it finishes it will boot up. 1 out 3 times I tried this it booted then immediately rebooted to the stock recovery with an error saying that my data may be corrupt and if I see this message again then perform a factory reset. And gave me to options "try again" and "factory reset". I clicked "try again". It then booted normally.
13. Power off your phone.
14. While holding vol down press and hold power button for a few seconds and then release the power button but NOT the vol down button. This will put you in bootloader mode.
15. Once in bootloader mode it will then boot twrp.
16. Once once twrp loads click install then navigate to the folder you put the twrp installer.zip and flash the installer. 17. Hit "reboot system"
18. Sit back and wait.
19. All your data will remain on the phone. All your settings stayed the same.
***********NOTICE ***********
1. YOUR BOOTLOADER MUST BE UNLOCKED. IF YOU DONT KNOW HOW TO DO THAT THEN YOU SHOULDNT BE ATTEMPTING THIS. ESPECIALLY IF YOU ASK ME HOW TO UNLOCK YOUR BOOTLOADER.
2. I TRIED THIS 3 DIFFERENT TIMES WITH THE SAME RESULTS. I will post pics of the step by step process later. Just wanted to go ahead and get this out there so those of you who know your way around an android could do it.
3. I AM NOT RESPONSIBLE FOR YOUR ACTIONS.
I AM NOT RESPONSIBLE FOR YOU F'ING THIS UP AND NOT FOLLOWING INSTRUCTIONS TO A "T".
4. THIS IS RISKY BUT IF YOU FOLLOW INSTRUCTIONS CAREFULLY YOU SHOULD HAVE NO ISSUES.
Im also posting a pic of my about phone to show I am indeed on "Q" and that this worked for me.
Hope you enjoy
Be patient I'll have step by step screen shots posted in a little bit of the process. To maybe make it easier to understand.

Could this work for official android 10

Very nicely explained, thank you.
Please excuse me if this is a stupid question, but why not just extract and edit on your PC instead of on the phone then transfer to PC?

Did you try flashing magisk?
Thanks for letting us know latest twrp works. But did you try to get root @mattwheat ? I am too afraid to lose data so didn't flash magisk yet.

All I did was manually flash bootloader, radio, system and vendor and it kept all my data with working twrp and root (coming from pie custom rom).

sinkoo1979 said:
All I did was manually flash bootloader, radio, system and vendor and it kept all my data with working twrp and root (coming from pie custom rom).
Click to expand...
Click to collapse
So you didn't even wipe anything? You just booted into TWRP and manually flashed the files? I'm also on a 9 custom ROM and would love to know the best/safest way to make the move to 10

johnblundon said:
So you didn't even wipe anything? You just booted into TWRP and manually flashed the files? I'm also on a 9 custom ROM and would love to know the best/safest way to make the move to 10
Click to expand...
Click to collapse
no wipes
Flashed through fastboot.
Steps:
flash bootloader
reboot to bootloader
flash radio
reboot to bootloader
flash system
flash vendor
reboot to system
I was missing OTA function in settings.....
it work for me but can't guarantee it will work for everybody. Best way is to try it.
flashed q beta and went back to pie customs roms by flashing bootloader, radio, and vendor (before official q was released). Have to download all apps but internal storage stayed intact.

salpsuc said:
Very nicely explained, thank you.
Please excuse me if this is a stupid question, but why not just extract and edit on your PC instead of on the phone then transfer to PC?
Click to expand...
Click to collapse
You're welcome. And sure you could do that I would imagine. May be easier but then I would be explaining a method I did not actually try. And that would suck if by chance some ones phone caused world's to collide. I would feel pretty bad about that. Unless the end result was Nancy pelosi shutting up and resigning.

rahil3108 said:
Thanks for letting us know latest twrp works. But did you try to get root @mattwheat ? I am too afraid to lose data so didn't flash magisk yet.
Click to expand...
Click to collapse
I did not have root after flashing twrp.... Seems like, looking back, that I tried and seems like it may have said "successful" but it didn't stick upon reboot. But I imagine it's neither here nor there cuz y'all prolly have root by now...