So here is my problem -
A few months ago I decided to update to 4.3 from 4.1.2.
I updated manually with Odin to one of the leaked versions that got out.
A couple of months ago I decided to downgrade back to 4.1.2 and wait for the OTA 4.3 that was about to come.
When I manually downgraded to 4.1.2 I had that notorious 0049XX IMEI issue which I couldn't fix, and therefore didn't have calls\sms.
I went to a local phone repair lab and they fixed the IMEI issue. I have no idea what they did, but now my phone is on stock 4.1.2
And the IMEI is back to normal again.
My question is -
I'm tired of waiting my operator to release a 4.3 update (not happening anytime soon).
I want to update manually to UK\Germany\France 4.3. Will I loose my IMEI again ?
Someone told me that a device that had an IMEI issue fixed won't be able to upgrade\downgrade versions
Ever again because it will wipe the IMEI again, Can someone confirm that ?