My P970 after flash fw does not use GSM only - LG Optimus Black

I ask that the Flash FW, I can not use GSM only get to choose from. GSM / WCDMA (auto mode) Throughout.
** Why was I up rom V20B, then it is not the root, I used software update [kdz] is then the above statement.
*** use only 2G network is unavailable.
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Software update in the Type and Phone mode it is.
you can meaning me

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Help plz..........😭😭😭😭

All I need is backup file which is ready in UMTS means 3G......because I try to unlock it but shows me GSM on signal network which is very low........Help plz .......as it shown here.... ... .
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Oem option issue

I brought the phone form clove and it was with no oem option hidden. today i flashed different region rom form UK suddenly it display on the download mode secure enable. Anyway to fix it?
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( G-935A ) Unlock Bands FOR OTHERS OPERATORS

My S7 Edge is blocked in some WCDMA 3G bands which does not work in some operators in Venezuela, is there any way to solve it?
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No Network

Can't select any network I am using Pakistan based rom should i be moved to Europe based to get the network. When i had this phone i was on Android 9 and decided to update it to latest A11 via odin and the problem started.
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Mobile data on 3G won't work

Hi guys, after i installed stock rom the imei now shows "unknown", but i can 4G (mobile data) without no problem at all. the problem is, in 3G mode i can only use voice and not mobile data (even through my carrier supports it and i had HSPA on another phone). can anybody solve it? Thanks
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