Problem so trying to network unlock Samsung Galaxy S3 - any advice? - GSM-Forum

LG18 · 09-13-2017, 18:01

Hi,

I recently acquired a Samsung Galaxy S3. I'd like to network unlock it, but have been presented with a series of problems due to the phones age, due to the OS version.

The guide to unlock via the keypad and debug menu only works on 4.1 jelly bean or lower.
I'm on 4.3, and the lowest I seem to be able to downgrade to is 4.1.2, which is all both Sammobile and Samsung upgrades seems to have.
I can't find the appropriate firmware anywhere.

The plan was to use Odin to downgrade, unlock the phone and then upgrade back to 4.3.
After looking for hours I'm pretty sure there's no way to get the firmware I'm after, so I'm looking for another method.

My reason posting here is becuase apparently there is a way to do it via root access. The issue is being 4.3, and by default ESF2.

Any guidance? Cheers

baz2 · 01-24-2018, 15:07

i too have the same problem mine was locked to EE uk and was given to me I have the unlock code and unfreeze code but still wont unlock doesn't even notify me of incorrect sim or no sim in phone just get message saying code not recognised or not connect to network, looks like going in the bin

any help welcome but dought it

09-13-2017, 18:01	#1 (permalink)
LG18 Junior Member Join Date: Sep 2017 Posts: 1 Member: 2757408 Status: Offline Thanks Meter: 0	Problem so trying to network unlock Samsung Galaxy S3 - any advice? Hi, I recently acquired a Samsung Galaxy S3. I'd like to network unlock it, but have been presented with a series of problems due to the phones age, due to the OS version. The guide to unlock via the keypad and debug menu only works on 4.1 jelly bean or lower. I'm on 4.3, and the lowest I seem to be able to downgrade to is 4.1.2, which is all both Sammobile and Samsung upgrades seems to have. I can't find the appropriate firmware anywhere. The plan was to use Odin to downgrade, unlock the phone and then upgrade back to 4.3. After looking for hours I'm pretty sure there's no way to get the firmware I'm after, so I'm looking for another method. My reason posting here is becuase apparently there is a way to do it via root access. The issue is being 4.3, and by default ESF2. Any guidance? Cheers

01-24-2018, 15:07	#2 (permalink)
baz2 Junior Member Join Date: Jan 2018 Posts: 1 Member: 2802247 Status: Offline Thanks Meter: 0	i too have the same problem mine was locked to EE uk and was given to me I have the unlock code and unfreeze code but still wont unlock doesn't even notify me of incorrect sim or no sim in phone just get message saying code not recognised or not connect to network, looks like going in the bin any help welcome but dought it