i try it on BE2029 and it work, but only with small rom (without gapps) - boot AOSP Android 12 OK
signal ok, wifi ok, bluetooth ok, fingerprint OK, sound OK, calling OK.... everything is ok
If i try flash rom with gapps then you can see error:
FAILED (remote: 'Not enough space to resize partition')
Someone who can help me with this?
p.s. i try:
1) fastboot resize-logical-partition system_a 1810000000 - result was OK,
but still same error after i use "fastboot flash system_a system.img" (i cant use higher value bcs again no space)
2) fastboot delete-logical-partition product - result was OK,
but still same error after i use "fastboot flash system_a system.img"
p.s. 2 I FOUND SOLUTION! USE:
fastboot delete-logical-partition product_a
and then you can flash new system
So i Fix for you bat file
Now you can flash what you need!
++ TWRP in previous version dont work for me... (cant boot) - so i use other twrp and now worked 
for you:
-update v2 - all img files replace to BE2029
-update v3 -some bug fixes 
-update v4 - new vbmeta and --disable-verification added
mega.nz
You can use AOSP Android 12:
January Security Patch Level (YES AGAIN) Fix boot regression on some devices (notably Samsung ones)
github.com
Or Pixel Experience Android 12 (recomended -
bcs gapps included and work like charm. AOSP dont work now with gapps trust me):
Changelog Sync with January sources of PE Sync with AOSP 12.0 v400.h by @phhusson Remove dynamic ViPER4Android FX installation Add SystemUI improvements patches by @kdrag0n
github.com
root in Pixel Experience Android 12 is not possible now... i try many ways...
if you find way how to root this rom with magisk - tell me 
Who need help PM me 
And of crs THANK YOU KILLCMD 