Help how downgrade?

[rhinfo1983]

HWNFF Version Ver3.0
Dongle Info RSA-2048-PSS,0x1001,0x1002,0x1003,0x1004,0x1005
Base Ver VNE-LGRP10-OVS 6.1.0.298
Build Ver VNE-L43CM 6.1.0.298(C212E8R1P2)
Vendor/Country iusacell/mx
Android Ver 12
Equipment Model VNE-L43CM
Custom Ver VNE-L43CM-CUST 6.1.0.8(C212)
Model VNE-LX3
FB LockState locked
Preload Ver VNE-L43CM-PRELOAD 6.1.0.2(C212R1)