[MOD][S-OFF] SIM Unlock Your HTC ONE M8 GSM *NOT SPRINT*

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JEANRIVERA

Senior Member
Mar 30, 2007
3,049
1,502
42
Nazareth, PA
HTC U12+
ASUS ROG Phone 3
Moderator Edit: The procedure in this guide may be outdated and we have reports of it not working on newer devices and causing other SIM unlock exploits to fail. A few mentioned that it caused all SIM cards not to work. Proceed at your own risk! (I recommend against it.)

Hello guys,

Here is a method (confirmed working by Me) to SIM Unlock your HTC ONE M8 GSM ONLY NOT FOR SPRINT for other SIM cards for use on other GSM networks.

Before we begin I wish to inform you that I did not create this tool. It is the property of sieempi.

You MUST be S-OFF & have External SD for this to work.

S-OFF METHOD or http://theroot.ninja/ if you can't S-OFF with first method

Usual disclaimer: I am not responsible for anything you do to your phone. Use this mod at your own risk.

as pointed by @GSLEON3 you could only do the SuperCid "11111111" described bellow after S-OFF and it will also unlock your device but if for some reason you change back your CID you will lose the unlock the other method unlock the device forever

SUPER CID WILL NOT SIM UNLOCK YOU DEVICE FROM CARRIER

how to SuperCID your device after S-OFF

[NOOBS Guide] HTC ONE SUPERCID method via fastboot

or permanent method

Instructions:

1) Go to this site: http://www.sieempi.eu/blog/2011/09/22/universal-sim-unlock-for-s-offed-htc-devices-536

2) You'll notice that the HTC ONE M8 is not listed in the supported devices, but the process does work.

3) Supply a valid IMEI and email address on the form on that page and where it says "Phone Type" put HTC ONE M8 , and they will email you a Config.Dat file to put on the root of your EXTERNAL SD card.

4) Reboot into bootloader, select "SIMLock" and it'll apply the config file.

5) Follow the instructions on the phone and reboot when it tells you to. If you get an "OpenCID File Fail" error, this is normal, proceed anyway!

6) Once you've rebooted, your HTC One M8 should be fully SIM Unlocked!

7) Put in a foreign SIM card and test it out

8) for Sprint M8 devices only Thanks to @pisang_azafor pointing and @nikme for the original thread follow this instructions http://xdaforums.com/showthread.php?t=2682242

If you have any questions, please refer to the linked site as I will be limited in how I can help since I am not the original creator of the tool.

Credits:
Adrian Campeanu (sieempi) - for the tool, because you know, it's his intellectual property and stuff
Binary - for sharing the site that has the tool and for risking his device to make sure it works (THANKS!!! )
Source: http://xdaforums.com/showthread.php?t=1272080

PS. I encourage donations to the tool maker who actually created this tool. You can find his donation button on the linked unlocking site.

This info was taken from this HTC Amaze forum thanks to @electronicrice for putting together the original thread that can be found here

http://xdaforums.com/showthread.php?t=1659430
 
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drigout

Senior Member
Jun 23, 2010
82
11
Sprint M8 here and I put in a AT&T sim and it told me that 4G was not available but when i made a call it came from my sprint number.
 

brar.arsh

Senior Member
Feb 5, 2012
2,098
858
GTA, Ontario
So I tried this from internal card and there was something written that failed in Red in bootloader. I pressed vol up and then restarted, I don't know if it's unlocked or not but I can search for different carriers.

Am not sure that if your are locked and you can still search different carriers or not.

y8ybuha6.jpg


Sent from my HTC One_M8 using Tapatalk
 

JEANRIVERA

Senior Member
Mar 30, 2007
3,049
1,502
42
Nazareth, PA
HTC U12+
ASUS ROG Phone 3
So I tried this from internal card and there was something written that failed in Red in bootloader. I pressed vol up and then restarted, I don't know if it's unlocked or not but I can search for different carriers.

Am not sure that if your are locked and you can still search different carriers or not.

y8ybuha6.jpg


Sent from my HTC One_M8 using Tapatalk
it is unlocked , believe me, just try it with an active sim card from a different provider
 
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JEANRIVERA

Senior Member
Mar 30, 2007
3,049
1,502
42
Nazareth, PA
HTC U12+
ASUS ROG Phone 3
Sprint M8 here and I put in a AT&T sim and it told me that 4G was not available but when i made a call it came from my sprint number.
this is intended for gsm devices I am not sure if turning off cdma radio on your device will work but as far as i know sprint/verizon phones can only be unlocked to be used with international sim cards not US based carriers
 

drigout

Senior Member
Jun 23, 2010
82
11
this is intended for gsm devices I am not sure if turning off cdma radio on your device will work but as far as i know sprint/verizon phones can only be unlocked to be used with international sim cards not US based carriers

Hummm forgot to do that going to try GSM/UMTS only


Edit:
It was set for CDMA/LTE only and the student worker that had the Micro Sim AT&T is gone for the day and I am unable to find another micro sim guess I will try latter.

Edit Again:
What phones have a Micro Sim? Just the iPhone 5 & 5s? I just looked at a GS4 and it just had Mini Sim.
 
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    Moderator Edit: The procedure in this guide may be outdated and we have reports of it not working on newer devices and causing other SIM unlock exploits to fail. A few mentioned that it caused all SIM cards not to work. Proceed at your own risk! (I recommend against it.)

    Hello guys,

    Here is a method (confirmed working by Me) to SIM Unlock your HTC ONE M8 GSM ONLY NOT FOR SPRINT for other SIM cards for use on other GSM networks.

    Before we begin I wish to inform you that I did not create this tool. It is the property of sieempi.

    You MUST be S-OFF & have External SD for this to work.

    S-OFF METHOD or http://theroot.ninja/ if you can't S-OFF with first method

    Usual disclaimer: I am not responsible for anything you do to your phone. Use this mod at your own risk.

    as pointed by @GSLEON3 you could only do the SuperCid "11111111" described bellow after S-OFF and it will also unlock your device but if for some reason you change back your CID you will lose the unlock the other method unlock the device forever

    SUPER CID WILL NOT SIM UNLOCK YOU DEVICE FROM CARRIER

    how to SuperCID your device after S-OFF

    [NOOBS Guide] HTC ONE SUPERCID method via fastboot

    or permanent method

    Instructions:

    1) Go to this site: http://www.sieempi.eu/blog/2011/09/22/universal-sim-unlock-for-s-offed-htc-devices-536

    2) You'll notice that the HTC ONE M8 is not listed in the supported devices, but the process does work.

    3) Supply a valid IMEI and email address on the form on that page and where it says "Phone Type" put HTC ONE M8 , and they will email you a Config.Dat file to put on the root of your EXTERNAL SD card.

    4) Reboot into bootloader, select "SIMLock" and it'll apply the config file.

    5) Follow the instructions on the phone and reboot when it tells you to. If you get an "OpenCID File Fail" error, this is normal, proceed anyway!

    6) Once you've rebooted, your HTC One M8 should be fully SIM Unlocked!

    7) Put in a foreign SIM card and test it out

    8) for Sprint M8 devices only Thanks to @pisang_azafor pointing and @nikme for the original thread follow this instructions http://xdaforums.com/showthread.php?t=2682242

    If you have any questions, please refer to the linked site as I will be limited in how I can help since I am not the original creator of the tool.

    Credits:
    Adrian Campeanu (sieempi) - for the tool, because you know, it's his intellectual property and stuff
    Binary - for sharing the site that has the tool and for risking his device to make sure it works (THANKS!!! )
    Source: http://xdaforums.com/showthread.php?t=1272080

    PS. I encourage donations to the tool maker who actually created this tool. You can find his donation button on the linked unlocking site.

    This info was taken from this HTC Amaze forum thanks to @electronicrice for putting together the original thread that can be found here

    http://xdaforums.com/showthread.php?t=1659430
    15
    I am on the same CID as yours in your signature but not able to get S-off.

    Every time getting -

    ********** whelp, this sucks, firewater can not work on your device **********
    ********** no amount of reflashing, retrying, or ruuing will fix... **********
    ********** DO NOT COME TO IRC ASKING FOR UPDATES OR ETAS!!!!!! **********
    ********** if we are able to fix this issue, it will be announced **********
    ********** bye bye.....sorry it didn't work out. **********

    HTC has patched firewater in their updates.beacups has made a fix for this.Wait for him to release this update.for more details you can look in the bounty thread.
    5
    can I erase the config.data after I'm done? Does this persist hard resets and flashing new ROMs?

    Once unlocked stays unlocked. Yes you can delete the config.dat file

    Sent from my HTC One_M8 using Tapatalk
    4
    HTC One M8 Sprint sim unlocked

    Can anyone confirm this works with the Sprint variant??

    I want to buy a Sprint variant because there are some m8 for sale on craigslist (most of them Sprint and Verizon) and i want to use it with at&t.. will it get 3g?

    Sent from my HTC One using xda app-developers app

    follow this method
    http://xdaforums.com/showthread.php?t=2682242

    work for my HTC M8 Sprint with Indonesian GSM Operator

    good luck !!!
    2
    That's not true, at least in the AT&T variant it ask you for a code once you put in a SIM card from other carriers

    Sent from my HTC One_M8 using Tapatalk

    I have an AT&T device. I picked it up at AT&T last Thursday, was the first one in stock at the LC, Texas store & the first one sold.

    At any rate, I rooted, S-OFF, SuperCID & removed tamper banner, popped in a Tmo sim & went live. No sim pin....