[Q] How can I SIM unlock my Canadian S4 ?

Anthony77777 · Feb 5, 2014

I have 3 i337m running 4.3 original firmware.One is Bell, 1 Rogers, 1 Telus.

I've tried all the methods I could find that include downgrading, rooting etc. I cannot seem to get access to the UMTS menu.

Is there any method that works ?

Gage_Hero · Feb 5, 2014

Anthony77777 said:
I have 3 i337m running 4.3 original firmware.One is Bell, 1 Rogers, 1 Telus.

I've tried all the methods I could find that include downgrading, rooting etc. I cannot seem to get access to the UMTS menu.

Is there any method that works ?

Everything Ihave seen, the service menu is hidden in 4.3... I never was able to get to it after the update... I did unlock my s3 before 4.3 but my s4 never got it done... best you can do now is either buy an unlock code on the net or take it to one of the mall kiosks... lots of the guys that sell cases unlock phones too for around $20

DeadlySin9 · Feb 6, 2014

Anthony77777 said:
I have 3 i337m running 4.3 original firmware.One is Bell, 1 Rogers, 1 Telus.

I've tried all the methods I could find that include downgrading, rooting etc. I cannot seem to get access to the UMTS menu.

Is there any method that works ?

Did you try specifically flashing a modem from an older version where it had the service menu? (like the old 4.2.2 modem) and did you try flashing an older one and using RegionLock Away?

TikiThePug · Feb 6, 2014

DeadlySin9 said:
Did you try specifically flashing a modem from an older version where it had the service menu? (like the old 4.2.2 modem) and did you try flashing an older one and using RegionLock Away?

+1

Also, the SIM unlock trick does not seem to work on the i337M with the newer MK6 modem. Heck, I even tried it on stock right when I got mine (which was still on MDJ at the time), and it didn't work. But results vary, apparently. Try downgrading to 4.2.2 stock like DeadlySin9 suggested, and see if that will work. If it doesn't, there should be an app out there that can access the hidden Service Menus; I just can't remember the name of it at the moment.

Anthony77777 · Feb 12, 2014

DeadlySin9 said:
Did you try specifically flashing a modem from an older version where it had the service menu? (like the old 4.2.2 modem) and did you try flashing an older one and using RegionLock Away?

The device does not allow downgrades to 4.2.2 for any carrier firmware. I tried region lock away on 4.3 with no success.

jd1639 · Feb 12, 2014

Anthony77777 said:
The device does not allow downgrades to 4.2.2 for any carrier firmware. I tried region lock away on 4.3 with no success.

Your not downgrading the firmware, just the modem. You can flash it in your custom recovery

Anthony77777 · Feb 12, 2014

DeadlySin9 said:
Did you try specifically flashing a modem from an older version where it had the service menu? (like the old 4.2.2 modem) and did you try flashing an older one and using RegionLock Away?

jd1639 said:
Your not downgrading the firmware, just the modem. You can flash it in your custom recovery

How can I downgrade the modem ?

jd1639 · Feb 12, 2014

Anthony77777 said:
How can I downgrade the modem ?

Look for the zip file in the development forum and flash that in your recovery.

Here
http://xdaforums.com/showthread.php?p=42589278

Anthony77777 · Feb 12, 2014

jd1639 said:
Look for the zip file in the development forum and flash that in your recovery.

Here
http://xdaforums.com/showthread.php?p=42589278

The modem downgrade fails with odin.

<ID:0/003> Added!!
<ID:0/003> Odin v.3 engine (ID:3)..
<ID:0/003> File analysis..
<ID:0/003> SetupConnection..
<ID:0/003> Initialzation..
<ID:0/003> Get PIT for mapping..
<ID:0/003> Firmware update start..
<ID:0/003> modem.bin
<ID:0/003> NAND Write Start!!
<ID:0/003> Transmission Complete..
<ID:0/003> Now Writing.. Please wait about 2 minutes
<ID:0/003> Receive Response from boot-loader
<ID:0/003> FAIL! (Auth)
<OSM> All threads completed. (succeed 0 / failed 1)
<ID:0/003> Removed!!
<ID:0/004> Added!!
<ID:0/004> Removed!!
<ID:0/004> Added!!

jd1639 · Feb 12, 2014

Anthony77777 said:
The modem downgrade fails with odin.

<ID:0/003> Added!!
<ID:0/003> Odin v.3 engine (ID:3)..
<ID:0/003> File analysis..
<ID:0/003> SetupConnection..
<ID:0/003> Initialzation..
<ID:0/003> Get PIT for mapping..
<ID:0/003> Firmware update start..
<ID:0/003> modem.bin
<ID:0/003> NAND Write Start!!
<ID:0/003> Transmission Complete..
<ID:0/003> Now Writing.. Please wait about 2 minutes
<ID:0/003> Receive Response from boot-loader
<ID:0/003> FAIL! (Auth)
<OSM> All threads completed. (succeed 0 / failed 1)
<ID:0/003> Removed!!
<ID:0/004> Added!!
<ID:0/004> Removed!!
<ID:0/004> Added!!

Do you have a custom recovery or safestrap? I'd flash the zip on there

Anthony77777 · Feb 12, 2014

jd1639 said:
Do you have a custom recovery or safestrap? I'd flash the zip on there

I installed the .zip with cwm recovery but when I checked my modem (baseband) it was mk6 modem, so it was unchanged.

azuziel · Feb 12, 2014

Anthony77777 said:
I installed the .zip with cwm recovery but when I checked my modem (baseband) it was mk6 modem, so it was unchanged.

I've never been able to get this to work either. Also related, unlocking will remove LTE, permanently.

DeadlySin9 · Feb 13, 2014

azuziel said:
I've never been able to get this to work either. Also related, unlocking will remove LTE, permanently.

Unlocking shouldn't remove LTE. All you have to do is make sure to correct the APN, as it might change, and flash back to your newer modem afterwards.

Are you sure your ODIN drivers are set up right? Try reinstalling/manually updating the drivers. They never like to work very well. You could also try Mobile ODIN since you have an unlocked bootloader.

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[Q] How can I SIM unlock my Canadian S4 ?

Anthony77777

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