Question How to Flash Global to CN rom please? - Lenovo Legion Phone Duel 2

Hello everyone , i have bought my Lenovo Legion phone Duel 2 at Giztop.com. come with Global Rom. but i have problem with BLuetooth(too many latancy) when i play Pubg Mobile, i Rooted my phone and try change version opf ROM(global) , till Z12.5.188, still have same problem, and i try change a CN rom because some friend with CN rom he said have not problem of bluetooth. and when i flash chinese ROM i got screen said Hardware not compatoble..... how to slove ir please?
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Might be worth a shot to try in fastboot mode: fastboot --disable-verification --disable-verity flash vbmeta vbmeta.img ( https://androidfilehost.com/?w=files&flid=324749 ) (I believe any vbmeta should work, worst case scenario just flash again with RSA). If it doesn't work, go back to global.

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&(*) said:
Might be worth a shot to try in fastboot mode: fastboot --disable-verification --disable-verity flash vbmeta vbmeta.img ( https://androidfilehost.com/?w=files&flid=324749 ) (I believe any vbmeta should work, worst case scenario just flash again with RSA). If it doesn't work, go back to global.
Click to expand...
Click to collapse
emm... it not work

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I think I found a solution with the vbmeta.img(s).
Try,
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
fastboot --disable-verity --disable-verification flash vbmeta_system vbmeta_system.img
Flashing both through fastboot with the disable flags set from 12.5.591 bundle should allow the CN system (Legion Pro 2) to boot on a Duel 2. First step would be to flash the CN build then boot into the bootloader, then fastboot reboot fastboot, followed by the above commands (make sure you copy the vbmeta.img(s) to your platform-tools directory first), last step fastboot reboot bootloader and select start.
Post results if you are successful.

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You may want to follow the procedure of incompatible software on Lenovo Legion 1 section. Someone already manage to convert Global to CN.
I think what they did is back up their persist and modem and restore once you flashed CN rom.

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First backup your persist and modem_a and modem_b partitions via Qfil, then try flashing the CN rom with "Erase all before download" option checked. After that boot into qdloader once again and using cn programmer in flat build, erase your persist, modem_a and modem_b partitions by clicking "erase" and then load the backed up files. in my case it worked but once again i have the battery drain problem

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Malberd said:
First backup your persist and modem_a and modem_b partitions via Qfil, then try flashing the CN rom with "Erase all before download" option checked. After that boot into qdloader once again and using cn programmer in flat build, erase your persist, modem_a and modem_b partitions by clicking "erase" and then load the backed up files. in my case it worked but once again i have the battery drain problem
Click to expand...
Click to collapse
Hey! Did you managed to fix the battery drain problem ? Thanks.