Flash Android 9 Recovery on Android 10 PX30 - MTCD Android Head Units Q&A

Trying to get Hal9k Android 9 Mod installed on my Stock Android 10 PX30.
I understand you need to flash the recovery for the version of Android you want to go to, so I'm trying to flash Android 9 Recovery but I can't get it to work.
I tried Mod Installer APK inside of Malay but it shows Error 1 and does nothing.
Tried making the Rockchip Upgrade SDCard and putting it in the GPS SD Card slot but it doesn't boot the SD, only straight to Android 10.
I'm trying not to use ModInstaller Pro because I wanted to be able to purchase the OTA Updates once I get Hal9k.
I can install Full Firmwares Images like Android 8 and Android 10 over Rockchip PC Tool but there is no stock image for PX30 Android 9. So I am stuck

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[Q]

HI I have allwinner a13 tablet android 4.0.4 i have 10 part so i installed 10 part cwm recovery but i got yhe mount error so i reflashed my stock rom and tried the 9 . 11 part get the same proplem :angel::crying:

Qualcomm crash dump when trying to install recovery custom

Hi everybody,
I'm trying to install twrp for the first time on my op6, actually on stock android P final release.
I've unlock the bootloader without any issues, but when I try to boot on the twrp.img in the fastboot mode, the phone just return a qualcomm crash screen dump and no recovery custom is install.
I've check usb driver, adb files, and oneplus drivers and...I just don't understand what's wrong!
Do I have to downgrade to android P beta or oreo first to install a recovery custom and then flash a android P version at the end??!
thanks for any help!
https://forum.xda-developers.com/on...covery-theme-blacked-twrp-acuicultor-t3847752
u can use this
Use latest bluspark recovery, You won't face any issues.
I have bad experience with android 9. i m just loooking how to go back to Oreo. I have Twrp and rooted. any tips?
Tip 1. Stay on topic of thread
Tip 2. Read in the forum..
Ok solved !
Did not work for me ..
Even plugging it into a wall charger makes it crash dump

Problem Custom Recovery TWRP FOR A7 2018 Android 10 Binary 5

Hello guyz. my phone A750F Android 10
I had a custom recovery that I installed when I got into trouble and I could not enter the custom recovery, the phone turns off and on
Build my number: A750FXXU5CUE1
What should I do?
Do you have a custom recovery that I can install and log in to?
The same issue

cannot upgrade android version to android 9

hi all
my Xiaomi phone (SDM 845) was flashed custom Oxygen os and bricked my phone.
Now i cannot install miui stock firmware android 9 and 10 .
Everytime i install fastboot firmware android 9 , android 10,
get stuck into Bootloader.I tried <Wipe /format > in recovery ,but did not boot to system.
always loop into fastboot mode.
Only android 8.1 rom boot to system successfully.
I cannot upgrade to pie and Q rom.
help me .

A51 brick since october 2021...

Hi, i have a a51 (sm-a515f) is bricked since the last year....
I despair, I am looking for a solution I have flashed the official android 12 Rom nothing will be impossible for me to run TWRP for 1 week. When TWRP was running as soon as I wanted to install Lineage OS all hang up.
(Translated with Google from French)
Hello! As I watched video from AndroidHowTo channel, how to flash sm-a515f with a custom recovery (TWRP) i noticed, that it could be flashed only on the galaxy which has android 11
Therefore, if your phone can boot into Odin mode (downloading mode), you need to flash your phone with your stock ROM android 11 with binary 5 (!).
Then you simple need to follow usual steps: unlock bootloader, flash TWRP then flash disable_dm_verity... , make a full backup and only then do with your phone all things you want

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