Downgrading

[AhmadS3]

Hello Android Central users,

I've had 4.1.2 on my galaxy S3, everything was working perfectly. I've flashed 4.3 via Odin, so now I have no service available - Not registered on network (Emergency calls only). I downloaded 4.1.2 on my computer (MD5 file), so now I have 4.3 and 4.1.2 files (MD5) downloaded on my computer, for my region 'Cellcom' in Israel. So I want to downgrade because it says 'not registered on network' will it work if I flash the 4.1.2? What if an error occurs? Is it safe to downgrade as in flashing 4.1.2 over 4.3? Do I need a specific file to downgrade? If so, please tell me how to do it. Give me instructions, I'll appreciate it. I've tried clearing cache hoping that I restore the 4.1.2 but it didn't.

 

[mobilecrackers]

Do not downgrade this will damage EFS folder which stores imei and serial number

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[mobilecrackers]

once flashed with 4.3 you cannot downgrade.go to recovery and clear cache then data. It will fix the problem. If you want to downgrade then root your phone and backup the Efs folder

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[AhmadS3]

once flashed with 4.3 you cannot downgrade.go to recovery and clear cache then data. It will fix the problem. If you want to downgrade then root your phone and backup the Efs folder

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I cleared the cache, nothing's working.

 

[mobilecrackers]

Try cleaning cache and data too.
clearing data will remove all your applications and games.
if the problem is not fixed then update your phone with kies3

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[AhmadS3]

Try cleaning cache and data too.
clearing data will remove all your applications and games.
if the problem is not fixed then update your phone with kies3

Press THANK YOU and LIKE button if you gets the answer

How can I update with Kies? I have the latest firmware - 4.3..

-EDIT-: I forgot to mention that I did a factory reset, wiped data and cache. Still haven't got 4.1.2, stuck with 4.3.

 

[mobilecrackers]

This might be a bug on firmware

Go to www.sammobile.com/firmwares/1/
And search a latest firmware for.your phone.Then Reflash that firmware . remember never downgrade.

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[AhmadS3]

This might be a bug on firmware

Go to Firmwares | SamMobile
And search a latest firmware for.your phone.Then Reflash that firmware . remember never downgrade.

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What I am trying to do is, restoring the 4.1.2 because I have no signal - not registered on network. I checked the latest 4.3 firmware on SamMobile, it has the same modem so I think no changes will be made if I am not wrong.

 

[mobilecrackers]

Check your imei number.
you must backup the efs folder, or it will damage imei number. Try Reflashing the 4.3 firmware again. reflashing will not take time. So
Try it again..

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[AhmadS3]

Check your imei number.
you must backup the efs folder, or it will damage imei number. Try Reflashing the 4.3 firmware again. reflashing will not take time. So
Try it again..

Press THANK YOU and LIKE button if you gets the answer

My IMEI is *************** / 07 < what does that mean? (07)
Never mind, it's normal.
PLEASE HELP ME..

 

[mobilecrackers]

My IMEI is *************** / 07 < what does that mean? (07)
Never mind, it's normal.
PLEASE HELP ME..

07 means software version number it is called Sv number

reflash the 4.3 firmware again then go to the recovery and clear cache and data
you must backup the efs folder, if you decide to downgrade

 

[AhmadS3]

07 means software version number it is called Sv number

reflash the 4.3 firmware again then go to the recovery and clear cache and data
you must backup the efs folder, if you decide to downgrade

Weird, my IMEI is okay but I have no signal.
Status:
Network: Unknown
Service state: Out of service
Mobile network state: Disconnected
IMEI: *************** (15 digits)
IMEI SV: 07
Device status: Official
My IMEI is okay why am I having that issue? I flashed the correct firmware for my region.
EDIT: I opened the dialler and typed in *#0011# the IMEI was:
IMEI cerfi: FAIL what's that? How can I fix it?

 

[mobilecrackers]

Weird, my IMEI is okay but I have no signal.
Status:
Network: Unknown
Service state: Out of service
Mobile network state: Disconnected
IMEI: *************** (15 digits)
IMEI SV: 07
Device status: Official
My IMEI is okay why am I having that issue? I flashed the correct firmware for my region.
EDIT: I opened the dialler and typed in *#0011# the IMEI was:
IMEI cerfi: FAIL what's that? How can I fix it?

1, remove battery from the phone and DO NOT PUT BACK IN for the remainder of these instructions
2, underneath the battery on the phone is the imei# and serial#
3, you need the serial# and leave the battery out for this task
4, now start Kies that is on your P.C and make sure you have a internet connection
5, from the menu bar go to Tools and select firmware upgrade and initialization
6, enter the model GT-I9300 (make sure its CAPITALS GT-I)
7, enter serial# (CAPITALS again)
8, press OK to initalize (dont worry you should not have a battery in )
9, this will now give you the string = Initialised version PDA:*** / PHONE:*** / CSC:*** (***) this is what we want to see
start update

 

[AhmadS3]

1, remove battery from the phone and DO NOT PUT BACK IN for the remainder of these instructions
2, underneath the battery on the phone is the imei# and serial#
3, you need the serial# and leave the battery out for this task
4, now start Kies that is on your P.C and make sure you have a internet connection
5, from the menu bar go to Tools and select firmware upgrade and initialization
6, enter the model GT-I9300 (make sure its CAPITALS GT-I)
7, enter serial# (CAPITALS again)
8, press OK to initalize (dont worry you should not have a battery in )
9, this will now give you the string = Initialised version PDA:*** / PHONE:*** / CSC:*** (***) this is what we want to see
start update

I am afraid that I can't find the serial & IMEI. \:

 

[mobilecrackers]

I am afraid that I can't find the serial & IMEI. \:

you can see it form here
DO NOT POST YOUR IMEI NUMBER HERE

 

[AhmadS3]

you can see it form here
DO NOT POST YOUR IMEI NUMBER HERE
View attachment 118365

Thanks for trying to help me, but I don't have a sticker. I can see my S/N but not the IMEI. I bought this phone from a shop in my village.

 

[mobilecrackers]

Thanks for trying to help me, but I don't have a sticker. I can see my S/N but not the IMEI. I bought this phone from a shop in my village.

the imei number will be on the phone packing cover

 

[AhmadS3]

the imei number will be on the phone packing cover
View attachment 118367

I bought the phone without the packing cover, anyways my IMEI is correct.

 

[mobilecrackers]

I bought the phone without the packing cover, anyways my IMEI is correct.

Then reflash again with odin then clear cache and data

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[AhmadS3]

Then reflash again with odin then clear cache and data

Press THANK YOU and LIKE button if you gets the answer

Are you sure it will work?