How do I choose the correct firmware for my phone? I have a Samsung a310f that is frp locked on the back IT'S written yately "gugg", UK which could mean that it was made in the UK or for the UK now when I am on SamMobile I don't know if choosing the one for my country or the one that made the phone.
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first remove FRP then goto settings and enable OEM unlocking in developer options, otherwise you can't flash custom ROM https://android.stackexchange.com/questions/127739/how-to-bypass-verify-your-account-factory-reset-protection#comment285010_127739 – alecxs Apr 06 '20 at 16:56
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I can't get all the methods from YouTube to work in removing frp, what can I do – Pablo_Shikon Apr 07 '20 at 13:48
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ask the previous owner for google password – alecxs Apr 07 '20 at 13:51
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The phone was stolen – Pablo_Shikon Apr 09 '20 at 07:01
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Bluetooth method – alecxs Apr 09 '20 at 08:39
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PC method – alecxs Apr 09 '20 at 08:41
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For this model you can flash many official ROM versions.
https://fw.updato.com was a good source of download collection and tutorials in early years, but this site became worst since they monetarized everything
You can flash with Odin or Heimdall
Be aware there is downgrade protection for bootloader and flashing another ROM does not remove FRP lock. Only the methods for by-pass FRP may vary.
For Android 7 Nougat CF-Auto-Root is available but it requires OEM unlocking in developer options
Flashing TWRP is another option but it requires OEM unlocking, too
alecxs
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I have heard about "combination ROM" will help to by-pass FRP. Also some people report successful downgrade, i will revise my answer when i am back at PC https://forum.xda-developers.com/showthread.php?t=3586815 – alecxs Apr 09 '20 at 08:51