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I succesfully changed my CSC to XAR to enable samsung pay. SM-R770.

Hello Everyone. I have some awesome news for anyone who wants to activate samsung pay on ANY gear s3 classic (SM-R770). I have successfully changed my CSC to XAR (which is the csc for USA)
DISCLAIMER: this is a detailed account of what i did and it worked for me. USE AT YOUR OWN RISK.
Ok so first i want to say thanks to @BiggPharma , @xedamen , @Honestly Annoying , and @adfree as i used guides produced by each of them to do this.
What youll need:
Netodin3
files for current firmware. I got mine from @xedamen post:
https://forum.xda-developers.com/gear-s3/how-to/rom-samsung-gear-s3-classic-sm-r770-t3646789
files for the stock combonation firmware from @HonestlyAnnoying post:
https://forum.xda-developers.com/gear-s3/development/rom-samsung-gear-s3-sm-r770-t3584402
shout out to @BiggPharma for the guide that relates to SM-R760
INSTRUCTIONS:
----------------
1. Check reactivation lock is off
- On your phone, go to Samsung Gear App
- Go to Setttings Tab, choose "Find my Gear"
- Make sure Reactivation Lock is off
2. Connect your watch to your PC
- Hold down the home/power button until you see the "rebooting" screen
- Release the home/power button then quickly press it three times to bring up the boot menu
- Quick press the home/power button to cycle through the menu to "Download (wireless)"
- Long press the home/button to confirm the menu selection
- The phone will then go into WPS mode
- Double press the home/power button to change to AP mode
- On your PC, enable WiFi and connect to the access point on you watch.
NOTE: Until you successfully connect to NetOdin, your watch may display red text stating "Connection Timeout" - this is OK
- Open up NetOdin. You should now be connected to your watch (you should see the IP in the NetOdin window and "Connected to xx.xx.xx.xx" on your watch face.
NOTE: I had to disable Windows Defender public firewall temporarily for NetOdin to work properly
3. Flash combination firmware
- Load the unzipped .tar.md5 file into the "AP" box of NetOdin, wait for it to finish checking then click "Start". This should take about 10 minutes to complete after clicking "Start".
NOTE: I reccomend unchecking auto-reboot in the NetOdin3 program so it doesnt restart after flashing.
4. Flash CSC file from stock firmware
- Load the unzipped CSC_xxx.tar.md5 file into the "CSC" box of NetOdin, wait for it to finish checking then click "Start". This should take about 1-2 minutes to complete after clicking "Start".
5. Factory reset
- In your Gear, go to Settings > Gear Info > Reset Gear > Confirm
NOTE: BiggPharma got a warning at this stage that Reactivation Lock was on. Don't know why they got this message as they had definitely turned it off in step 1. They ignored it (no guts, no glory!) and was fine. Your mileage may vary. I however did not have this happen
6. Set CSC code
- In the Gear, go to the Tizen Keystring app
NOTE: screenshots of what your interface will look like: https://forum.xda-developers.com/showpost.php?p=74591475&postcount=13
- Type in the following code exactly: *#272*719434266344#
- You will be taken to a list of CSC codes that you can scroll through. Find the code you want to change to and select it. I used "XAR" for US so that i could use samsung pay.
7. Reflash complete current stock ROM
- Load the unzipped CSC_xxx.tar.md5 file into the "CSC" box of NetOdin, wait for it to finish checking.
- Load the unzipped AP_xxx.tar.md5 file into the "AP" box of NetOdin, wait for it to finish checking.
- Load the unzipped BL_xxx.tar.md5 file into the "BL" box of NetOdin, wait for it to finish checking.
- Click "Start". This should take about 15 minutes to complete after clicking "OK".
You are done!
i also should mention after i put the current stock firmware it got a FOTA update to R770XXU2BQH1.
ALSO shoutout to @adfree for being so awesome and helping xedamen which enabled me to do all this. he also pmed me and replyed to my comments with some useful info.
To everyone who helped me thanks a billion. you made my birthday (today) AMAZING.

I will try to do it with my watch, I want to change it from spanish to korean to be able to use my korean cards, cause spay is not even activated in Spain xdd

You could try Sales Code:
Code:
KOO
For Korea...
But no guarantee it will help...
It depend also on Firmware Version... and for SM-R770 we have only BQC5 public... not BQH1 nor CQK3 (Tizen 3)...
SM-R760 user can play with more Firmware:
BQC5 or BQH1 or CQK3
See posts, where users after downgrade from CQK3 lost Spay... for instance:
Code:
SER - Russia
Also not forget the Phone part...
It is an chain/riddle/puzzle... to find all working incredients...
Best Regards

adfree said:
It depend also on Firmware Version... and for SM-R770 we have only BQC5 public... not BQH1 nor CQK3 (Tizen 3)...
SM-R760 user can play with more Firmware:
BQC5 or BQH1 or CQK3
Click to expand...
Click to collapse
i also should mention after i put the current stock firmware it got a FOTA update to BQH1.

downgrade tizen 3 -> tizen 2 and change region
Please correct me if I am wrong.
my gear s3 - r770
ap r770xxu2cqk3
csc r770oxa2cqk3
3. I should lflash from https://forum.xda-developers.com/gear-s3/how-to/rom-samsung-gear-s3-classic-sm-r770-t3646789
4. I can't find CSC file in stock combination. Where i can get it?
6. I should flash from https://forum.xda-developers.com/gear-s3/development/rom-samsung-gear-s3-sm-r770-t3584402

Akakiy said:
Please correct me if I am wrong.
my gear s3 - r770
ap r770xxu2cqk3
csc r770oxa2cqk3
3. I should lflash from https://forum.xda-developers.com/gear-s3/how-to/rom-samsung-gear-s3-classic-sm-r770-t3646789
4. I can't find CSC file in stock combination. Where i can get it?
6. I should flash from https://forum.xda-developers.com/gear-s3/development/rom-samsung-gear-s3-sm-r770-t3584402
Click to expand...
Click to collapse
Sorry if what I'm posting confused you.
3. This is where you flash the FACTORY combination firmware.
4. The csc that you are flashing is from whatever firmware you are currently using. The reason for this is because if the csc is downgraded I read that it gets put into a bootloop that soft locks your watch. So you have factory firmware with your same csc.
6. You shouldn't be flashing anything in this step. This step is basically going into a certain menu and changing the watches internal sales code.

namrepus2010 said:
Sorry if what I'm posting confused you.
3. This is where you flash the FACTORY combination firmware.
4. The csc that you are flashing is from whatever firmware you are currently using. The reason for this is because if the csc is downgraded I read that it gets put into a bootloop that soft locks your watch. So you have factory firmware with your same csc.
6. You shouldn't be flashing anything in this step. This step is basically going into a certain menu and changing the watches internal sales code.
Click to expand...
Click to collapse
Thank you for answer.
4. I'am using Tizen 3 and i have no CSC "r770oxa2cqk3" from this version. Сan I solve this problem?

Akakiy said:
Thank you for answer.
4. I'am using Tizen 3 and i have no CSC "r770oxa2cqk3" from this version. Сan I solve this problem?
Click to expand...
Click to collapse
@adfree would probably be able to answer that. AFAIK there is no release for cqk3

Meanwhile I have CQK3 and also Combination Firmware CQK2 for SM-R770...
I could upload...
Best Regards

adfree said:
Meanwhile I have CQK3 and also Combination Firmware CQK2 for SM-R770...
I could upload...
Best Regards
Click to expand...
Click to collapse
@Akakiy maybe pm adfree and get the firmware and do do my guide with the firmware he provides.

Gear S2 Spay issue
Can I Use the same steps on my Gear S2? (of course if I can find the firmware for it)
Thanks

alikhan0056 said:
Can I Use the same steps on my Gear S2? (of course if I can find the firmware for it)
Thanks
Click to expand...
Click to collapse
I have no clue. You might want to ask someone experienced like @adfree

alikhan0056 said:
Can I Use the same steps on my Gear S2? (of course if I can find the firmware for it)
Thanks
Click to expand...
Click to collapse
Yes you can.
Firmwares what you need is: R720XXU2AOJ2 (Combination) / R720XXU2EQH1 (Regular) or R732XXU2AOJ2 / R732XXU2EQH1 based on your model.

Streect said:
Yes you can.
Firmwares what you need is: R720XXU2AOJ2 (Combination) / R720XXU2EQH1 (Regular) or R732XXU2AOJ2 / R732XXU2EQH1 based on your model.
Click to expand...
Click to collapse
Thanks, I'll try to locate these firmwares for R720.

alikhan0056 said:
Thanks, I'll try to locate these firmwares for R720.
Click to expand...
Click to collapse
If you manage to do this can you please let us know. I'm still waiting for Samsung pay to be released for the R720 in the UK.
Cheers
Sent from my SM-G955F using Tapatalk

Good news! I managed to do it. I will send you the links shortly.
Process is similar to Gear S3.

I'd like to change csc on my gear s3 frontier
Does the procedure work for it or is it just for classic?

big thanks to @namrepus2010, @Honestly Annoying and @adfree for the tutorial and all files.
I successfully change my CSC to XAR following your tutorial.
But now I have one question
My Gear S3 was updated to Tizen 3.0.0.1. Can I change my CSC back to ZTO using this combination file or I have to use the CQK2 combination firmware to do this?

At the moment 2BQC2 and 2CQK2 are same Software Revision like:
Code:
[B][COLOR="Green"]2[/COLOR][/B]CQK3
[B][COLOR="Green"]2[/COLOR][/B]CQL1
So you can use both Combination Firmware... if you want.
Best Regards

So friggin awesome!!! Bought my "International" version on the cheap and didn't have SPAY. NOW I DO!!!! Thanks so much for this tutorial!!!! Thanks @namrepus2010, @Honestly Annoying and @adfree for all of your help to this forum. Now, if we could just figure out a way to get android wear on this thing!

Problems with my Gear S2

Hi. I recently purchased a second hand Gear S2. I managed to connect it to a Huawei P10, but after turning off the bluetooth by mistake and re-enabling it, the watch asks to do a Factory Reset in order to connect with a device that was already connected with it before . After that, I managed to connect it with my older Glaxy A3 2017 and tried to update the software, but surprise, a pop-up shows saying "Your Gear has been modified. Software Update is not avaible.". Ideas how to fix that? Or this issue is because my Gear S2 (purchased second hand) is a Live Demo Unit?

Live Demo Unit
Click to expand...
Click to collapse
Look at Rear Case/Back Cover...
In theory you will find... NOT FOR SALE...
Anyway... if you know which exact model name...
SM-R720X
or
SM-R732X
or
You can flash Retail Firmware... via netOdin...
Better you choose correct Firmware, according to Model Name...
Only as info.
Best Regards

adfree said:
Look at Rear Case/Back Cover...
In theory you will find... NOT FOR SALE...
Anyway... if you know which exact model name...
SM-R720X
or
SM-R732X
or
You can flash Retail Firmware... via netOdin...
Better you choose correct Firmware, according to Model Name...
Only as info.
Best Regards
Click to expand...
Click to collapse
Yeah, it says Not For Sale. Model number is SM-R720X. Can you please give me a link for firmware download?

Check first Firmware on Device... with this Code:
Code:
*#1234#
Problem with LDU... Live Demo Unit
Since EPK5 it looks like Firmware detect LDU... and disable WiFi for use with netOdin...
And for valid FOTA use... you need "valid" Sales Code/CSC + Firmware Combination... otherwise you can again not update via Samsung FOTA...
Best Regards

adfree said:
Check first Firmware on Device... with this Code:
Code:
*#1234#
Problem with LDU... Live Demo Unit
Since EPK5 it looks like Firmware detect LDU... and disable WiFi for use with netOdin...
And for valid FOTA use... you need "valid" Sales Code/CSC + Firmware Combination... otherwise you can again not update via Samsung FOTA...
Best Regards
Click to expand...
Click to collapse
When entering the code *#1234#, the watch shows AP : R720XXU2AOIL and CSC : R720OXX2AOIL .
Also seem like the computer can find the AP connection from the watch and also it can connect, and netOdin does detect the watch too.

Try FIRST with older BOKK Firmware:
https://www.file-upload.net/download-12731427/smR720_BOKK_OXA.zip.html
Be carefully to download the 600 MB package... NOT any .EXE file.
I hope you will find netOdin + Instruction... otherwise ask...
Best Regards

adfree said:
Try FIRST with older BOKK Firmware:
I hope you will find netOdin + Instruction... otherwise ask...
Best Regards
Click to expand...
Click to collapse
OK, after that, what do I need to do next?

If you successfully flashed BOKK Firmware...
You can check if valid Sales Code/SCS is set... and you have your languages...
Because you have now OXX region Firmware... and I have only OXA BOKK...
If BOKK is on device... check via Phone if you get FOTA Update...
If not... then post result...
So we could try something... to make it "compatible"...
Best Regards

adfree said:
If you successfully flashed BOKK Firmware...
You can check if valid Sales Code/SCS is set... and you have your languages...
Because you have now OXX region Firmware... and I have only OXA BOKK...
If BOKK is on device... check via Phone if you get FOTA Update...
If not... then post result...
So we could try something... to make it "compatible"...
Best Regards
Click to expand...
Click to collapse
I successfully installed BOKK firmware and I have my language, which is in my case romanian, but in the Samsung Gear App, I still get the same error: Your Gear has been modified. Software updates are not available.

I still get the same error: Your Gear has been modified. Software updates are not available.
Click to expand...
Click to collapse
Do you know SDB Tool?
You are able to work with it?
We could try to identify, why Gear Manager App detect some Modification...
Maybe they increased Security to identify SM-R720X...
Best Regards

adfree said:
Do you know SDB Tool?
You are able to work with it?
Click to expand...
Click to collapse
No, I never heard of it so I don't know how it works.

As I can do the Samsung Gear in my rom custom .... to install it but try to run it tells me that the phone has been modified.

Have anyone reached out and found a solution then? 👨🏻‍🦯👨🏻‍

Gear S3 will not boot after update

I had an update start on my gear S3, and I realized after a while it was apparently in a boot loop.
I tried a reset and that didnt work.
I got into the boot menu and got it into recovery, but that didnt boot wither. One time it said resetting but again stopped doing anything.
Anyone have any suggestions on a fix?

Model Name is important to know...
So you can try to flash Firmware with netOdin...
SM-R760?
SM-R765A?
Or something else?
Best Regards

Its model
SM-R760
adfree said:
Model Name is important to know...
So you can try to flash Firmware with netOdin...
SM-R760?
SM-R765A?
Or something else?
Best Regards
Click to expand...
Click to collapse

netOdin + Instruction + Videos:
https://forum.xda-developers.com/showpost.php?p=73503787&postcount=150
Tizen 3 CQL1 Firmware for SM-R760 is here:
https://forum.xda-developers.com/gear-s3/development/rom-samsung-gear-s3-sm-r760-t3755374
Best Regards

My watch ist boot and restart

İ try install a fw with odin Wifi. And my watch is NOT boot. Only i see "Samsung gear s3 frontier" and shutdown my watch. İ try recovery odin Wifi but it same. Restart. Pls help me

Nobody here has Crystal Ball...
Try to give more details...
Model Name...
example SM-R760 or SM-R765A or SM-R770 or...?
What you flashed with netOdin?
Can you give filename? Or is it Top Secret...
...
Best Regards

adfree said:
Nobody here has Crystal Ball...
Try to give more details...
Model Name...
example SM-R760 or SM-R765A or SM-R770 or...?
What you flashed with netOdin?
Can you give filename? Or is it Top Secret...
...
Best Regards
Click to expand...
Click to collapse
i install AP_R760XXU1APK7 with odinnet. and my watch have bootloop.
model is r760.
it enters wireless mode but immediately restarts itself.
so i can not connect to wireless odin.
pls help.

Kannst Du deutsch?
Code:
AP_R760XXU[COLOR="Red"][B]1[/B][/COLOR]APK7
Wrong decision.
Software Revsion 1 is wrong...
Damn Rollback Prevention from Samsung...
Try this:
https://forum.xda-developers.com/showpost.php?p=74649096&postcount=2
And use only Software Revsion 2 Firmware.
Best Regards

Question Watch 4 Classic (42mm)

Hello my friends
Please i need some help
I have Watch 4 Classic (42mm)
Model Number: SM-R885UZKAXAA
I need to flashing by oden becose is bricked
I need rom and and photo How to connect the USB cable to the watch
Please help me
Thank you in advance

I can try to help you...
Maybe first try to explain "bricked"...
?
Dead in black nothing on screen?
I am asking because meanwhile few variants of "bricked" known... also with Photos...
Best Regards

adfree said:
I can try to help you...
Maybe first try to explain "bricked"...
?
Dead in black nothing on screen?
I am asking because meanwhile few variants of "bricked" known... also with Photos...
Best Regards
Click to expand...
Click to collapse
Thank you for helping me... The problem is that the watch does not work completely. It does a continuous restart with the Samsung logo only and restarts. At first I thought the problem was the battery. I replaced it and still the same problem... Many attempts were made to fix it, but to no avail I wanted to try flashing the ROM, hoping it would work with it.

You can enter Reboot Menu? By holding both keys...
I was able to kill my SM-R870 with stupid tests... then infinity loop and no chance to enter Download Mode...
Will try to find my Video...
USB Pinout should the same:
SM-R765F Teardown
Dear friends, I found that the LTE connection is very useful when you have to leave your mobile somewhere and you can get calls and notifications through mobile connection. I bought a Gear S3 LTE (R765) from a Singapore site because in Italy it...
forum.xda-developers.com
I have forgotten if i have Firmware... Need to look at my HDD...
Best Regards

Found my Video...
Rooting Galaxy Watch4
I've unlocked bootloader, got boot.img(hashes match in update.zip and my boot.img + it boots fine), patched it and vbmeta in tar by magisk 24.3, but when i flash new boot.img, it throws me "SECURE FAILED: BOOT" error on watch and system doesn't...
forum.xda-developers.com
I killed Recovery/Security and was not able to enter Download Mode... then killed by short circuit... because all soooo f%&ing tiny...
Only as Info.
Best Regards

Code:
COMBINATION_FAC_FBR0_R885USQU1AVJ1_FACFAC_CL25273841_QB57442443_REV00_user_mid_noship_MULTI_CERT.tar.md5
I have only Combination Firmware... NO Stock Firmware.
And this FACtory Firmware is useless without eToken...
Sorry.
Best Regards

adfree said:
You can enter Reboot Menu? By holding both keys...
I was able to kill my SM-R870 with stupid tests... then infinity loop and no chance to enter Download Mode...
Will try to find my Video...
USB Pinout should the same:
SM-R765F Teardown
Dear friends, I found that the LTE connection is very useful when you have to leave your mobile somewhere and you can get calls and notifications through mobile connection. I bought a Gear S3 LTE (R765) from a Singapore site because in Italy it...
forum.xda-developers.com
I have forgotten if i have Firmware... Need to look at my HDD...
Best Regards
Click to expand...
Click to collapse
First, thank you very much for everything you do for me.
* Yes i can enter to reboot menu and from and Among the options from the list I choose only download usb (Only this option works at the moment)
* About USB pinout I think is same and
I am professional in the welding issue. so I am not afraid of his problems.
Now I only need the Frimware file SM-R885

adfree said:
Code:
COMBINATION_FAC_FBR0_R885USQU1AVJ1_FACFAC_CL25273841_QB57442443_REV00_user_mid_noship_MULTI_CERT.tar.md5
I have only Combination Firmware... NO Stock Firmware.
And this FACtory Firmware is useless without eToken...
Sorry.
Best Regards
Click to expand...
Click to collapse
Please If you can upload this Firmware i will to try with it .