Changing CSC with SamKey (New version)

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carlitobahsoun

Senior Member
Sep 26, 2012
3,796
1,560
55
beirut lebanon
My phone is S20 SM-G980F maybe other code is needed or is for all S20?
try : restart ur mobile , sure sim card in / copy the code from here
*#*#27262826#*#*
than install the google phone app / set it as default dialer / try like u wana make a call with new number and past the code / u must see csc screen appear...
be carefull if it work and successful , ur phone will wipe.
hope it work
good night
 
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NIKOSXRI

Senior Member
Jan 27, 2009
561
57
57
Athens
try : restart ur mobile , sure sim card in / copy the code from here
*#*#27262826#*#*
than install the google phone app / set it as default dialer / try like u wana make a call with new number and past the code / u must see csc screen appear...
be carefull if it work and successful , ur phone will wipe.
hope it work
good night

Hello my fried, I just want to tell you what I did.
I downgraded to 2.5 and there the Google dialer worked right away (maybe due to hard reset).
Something was messed in my software.
Changed to ILO Israel, upgraded to 3.
Now I'm happy, I have call rec, spam protection Hiya, oxygen level, camera with double power tap .
I don't have Samsung pay but in Greece is limited only to curve card and the banks I go have their own pay app so I didn't care.
Thanks for help.
 

carlitobahsoun

Senior Member
Sep 26, 2012
3,796
1,560
55
beirut lebanon
Hello my fried, I just want to tell you what I did.
I downgraded to 2.5 and there the Google dialer worked right away (maybe due to hard reset).
Something was messed in my software.
Changed to ILO Israel, upgraded to 3.
Now I'm happy, I have call rec, spam protection Hiya, oxygen level, camera with double power tap .
I don't have Samsung pay but in Greece is limited only to curve card and the banks I go have their own pay app so I didn't care.
Thanks for help.
almost welcome , happy that u successful
 

Imperticus

Senior Member
Jan 27, 2011
1,184
1,243
So I have S20 with H3G CSC. Downgraded to BTU firmware 2.5 using ODIN.
Trying *#27262826#* I only get the CSCs that are all THREE related.
Reckon I need Samkey to change CSC?
 

MrBauer

Member
Aug 28, 2010
30
6
I have a Snapdragon S20+, SM-G9860 apparently from Hong Kong, currently on the TGY region. Bought from Amazon Renewed in the UK for use in the UK, Whilst everything works fine, I'd like to changed the CSC to the BTU region, in my case is it just a case of changing it with Samkey? The dialer method only brings up CHC/TGY/BRI.

I've tried to research this myself however it's hard to find a straight answer with it being a HK device and the UK having the Exynos model.

Thanks.
 
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cobra19ro

Member
Feb 15, 2014
10
1
So I have S20 with H3G CSC. Downgraded to BTU firmware 2.5 using ODIN.
Trying *#27262826#* I only get the CSCs that are all THREE related.
Reckon I need Samkey to change CSC?
Same here . I got an S21 Ultra from H3G Uk and I only get 3 CSC codes that are THREE. Would like to change from H3G to BTU , but I could not find a way yet. Hopefully Samkey will come with a fix for this
 

Laird_Attwood

Senior Member
Apr 8, 2011
166
15
England
So I have S20 with H3G CSC. Downgraded to BTU firmware 2.5 using ODIN.
Trying *#27262826#* I only get the CSCs that are all THREE related.
Reckon I need Samkey to change CSC?


You can only change the CSC to the available CSC's in your handsets firmware - to change you will need to flash a stock firmware with a OXM CSC file then you can change to BTU or whatever you require from the firmwares CSC file.

Three branded firmware will only show Three CSC codes. - probably why a lot of people are complaining SAMKey doesn't work. Never had a issue with it personally - Chimera tool does the same but shows you available CSC codes you can pick depending on installed firmware
 
Apr 1, 2020
10
5
Hi guys.
I'm trying to download Samkey 3.50.8 from their website (I need to try changing the CSC on my S21 Ultra) but I keep on getting the virus alert (Trojan:Win32/Bomitag.D!ml) from Windows Defender and the downloaded file (samkey3508.zip) is deleted.
Is it happening just to me or is it normal?

Looking for advise please.

Thanks
 

NIKOSXRI

Senior Member
Jan 27, 2009
561
57
57
Athens
Hi guys.
I'm trying to download Samkey 3.50.8 from their website (I need to try changing the CSC on my S21 Ultra) but I keep on getting the virus alert (Trojan:Win32/Bomitag.D!ml) from Windows Defender and the downloaded file (samkey3508.zip) is deleted.
Is it happening just to me or is it normal?

Looking for advise please.

Thanks
Normal, disable all antivirus and wall and remove your phone locking and backup and go
 
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drago122

Senior Member
Dec 26, 2014
95
13
Normal, disable all antivirus and wall and remove your phone locking and backup and go
Hello everyone, someone could write step by step the procedure for the csc change, I have never used the program and I would not want to damage my s21 utra, I have an oxm firmware and I would like to take it from italy tim to no brand itv.
Thanks for the help.
 

ganeshkrupad

Member
Oct 10, 2016
13
0
How to change the csc for Galaxy Tab S6 wifi only model (SM T860)? It doesn't have a sim tray. Any help is much appreciated. Currently in xsp need to change it to btu
 

goTouch

Senior Member
Is Samkey reliable? I did change csc successfully with samkey. I even flashed oxm again and all works fine. No Knox void, download mode showing correct csc, updates are coming....

I've just got worried about what samkey could do with imei or other info from network. Tried to find complains about it at Google but couldn't find none, which is a good thing. What's the probability samkey uses my info (imei) for bad things, sell data..... that kind of stuff. Should I be worried?

Anyway, samkey worked great.
 

billyx1

Senior Member
May 25, 2012
229
75
GT-i9250
Google Nexus 10
Have you been successfull? I would like to try to the other direction (US to Hongkong) to get a firmware with unlockable bootloader and beeing able to update to newer firmware versions.
 

billyx1

Senior Member
May 25, 2012
229
75
GT-i9250
Google Nexus 10
has anyone tried it from different country if you dont have all region unlocked?
i have a s20 ultra 5g from hongkong and i want to change it to US for faster software update, will it be possible?
Have you been successfull? I would like to try to the other direction (US to Hongkong) to get a firmware with unlockable bootloader and beeing able to update to newer firmware versions.
 

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  • 1
    CHC firmware can be owerwriten with TGY witouth problems...if any1 needs that info [emoji6][emoji2772]

    Sent from my SM-N9860 using Tapatalk
    1
    What's the benefits of changing CSC? First Samsung phone since S2.
    1
    @quertox I've downloaded last TGY Firmware (October) from Sammobile and flashed it with Odin. To enter download mode on s20 turn it off, pres and hold up+vol down together and connect usb-c from pc to a phone. After you get screen on Chinese you have to press vol up once to enter download mode. Good luck [emoji112]

    Sent from my SM-G9810 using Tapatalk
    1
    My phone is S20 SM-G980F maybe other code is needed or is for all S20?
    try : restart ur mobile , sure sim card in / copy the code from here
    *#*#27262826#*#*
    than install the google phone app / set it as default dialer / try like u wana make a call with new number and past the code / u must see csc screen appear...
    be carefull if it work and successful , ur phone will wipe.
    hope it work
    good night
    1
    I have a Snapdragon S20+, SM-G9860 apparently from Hong Kong, currently on the TGY region. Bought from Amazon Renewed in the UK for use in the UK, Whilst everything works fine, I'd like to changed the CSC to the BTU region, in my case is it just a case of changing it with Samkey? The dialer method only brings up CHC/TGY/BRI.

    I've tried to research this myself however it's hard to find a straight answer with it being a HK device and the UK having the Exynos model.

    Thanks.