For Signal Fix No need to flash your region cust follow these steps.
1.open any root explorer
2.goto /cust/all/cn/prop and rename local.prop to local.prop.bak
3.restart and wait for 10 seconds
I know its ugly but it works and you won't lose updater too.
Omg, that sounds so weird that I might try oreo installed from updater again... I didn't even back up xd
I Tried, no imei, sim detected nor signal :'c... doesnt work
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