yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Watch] tower5:
Hello

I would ask if you did the change , I'm in the same situation as you and I looking for more detailed info

just to contribute . here I am :

I've just downloaded the file: COMBINATION-FT55_R820XXU1ATJ1.zip (589M) , it contains the file : COMBINATION-FT55_R820XXU1ATJ1.tar.md5 (1,712 Gb)

I believe it should BE the right one for an R820 having Tizen 5.5.0.1 and being in CTJ5 csc XAR : Could somebody confirm ?

and for the next steps...... can I follow the following procedure : ( please considere I copied and adjusted the same following my understanding , so it could be WRONG , I do not want to generate troubles to others...just verify ) :

1. Start NetOdin3 click options and disable auto reboot

2. Click AP and select the combination firmware

3. Hold reboot button on the Samsung watch, when the reboot screen shows up press home multiple times to get into the boot menu

4. Jump to the Download (Wireless) and hold the boot button again to get into the Firmware download menu

5. Press the same button to more times to switch the watch to AP mode

6. Connect your wifi to the watch SM-R820-someid

7. In NetOdin3

8. Click reset

9. Select the CSC and load the md5 file = COMBINATION-FT55_R820XXU1ATJ1.tar.md5) and press start

10. When you reboot the device hold the boot button again until you enter the boot menu again

11. Select recovery and let the device restart

12. Enter settings -> About watch -> Software -> Tap software version until debug mode starts (you may need to restart your watch)

13. Connect watch to wifi

14. sdb connect <watchip>

15. sdb root on

16. sdb shell

17. backup active-customer.info: sdb pull /csa/csc/csc-active-customer.inf

18. backup prodcode.dat: sdb pull /csa/imei/prodcode.dat

19. edit /csa/csc/csc-active-customer.inf and replace csc code (I'm actually XAR and I would change to KOO . is there effectively an advantage now considering the situationn ....?

20. edit /csa/imei/prodcode.dat and replace last three characters to csc code you want (don't enter the csc selection after this it will reset it to the factory region)

21. reboot the device into recovery (i used /usr/bin/csc-util --reboot customer_change but i'm not sure it's necessary)

22. run netodin again and select AP, BL and CSC to flash stock

about this last step , can I use the same I used in August for a previous region change , that are :

AP_R820XXU1ASHF_usr.tar.md5

BL_R820XXU1ASHF_usr.tar.md5

CSC_OXA_R820OXA1ASHF_usr.tar.md5

or I need more recent versions ? in such a case could soòebody tell me which are the suitable files and where to get them ?

Thanks to all the Expert for their GREAT support and Best Regards
[Samsung Galaxy Watch] Huy.tq:
You can see here https://youtu.be/EyaGf31T6Xc
[Samsung Galaxy Watch] rrustembejta:
Thank you very much, bro, the tutorial was very good, could you please help me to find all the necessary files to proceed and change it.

Thanks for your help.

---------- Post added at 11:06 AM ---------- Previous post was at 11:04 AM ----------

No i didn't try yet, if you have the files please send me a link where I can download and i will try and get back to you again.
[Samsung Galaxy Watch] Huy.tq:
Which you need is in tutorial video. you look under will see link download file
[Samsung Galaxy Watch] tower5:
I found combination file here :

https://www.fullstockfirmwaredownload.com/downloads/sm-r820/

in the same site it seems we can find :

AP_R820XXU1CTI4_usr.tar.md5

BL_R820XXU1CTI4_usr.tar.md5

CSC_OUA_R820OUA1CTI4_usr.tar.md5

maybe these are the files to use qt the end of the procedure ?

thanks to all for your support
[Samsung Galaxy Watch] rrustembejta:
Bro thanks for the link, before purchasing I sent an email to the site and ask them if we are clear to proceed with these files mentioned by you because both of us we are running on :

ONE UI Watch version 2.0

Watch Active 2 R820

Tizen Version 5.5.0.1

Software Version R820XXU1CTJ5
[Samsung Galaxy Watch] tower5:
You are right !! Thanks !!...
[Samsung Galaxy Watch] tower5:
hi, did you get any info ?
[Samsung Galaxy Watch] nellinodj:
how can i change csc on active 2 with tizen 5.5.0.1 R820XXU1CTJ5

oxa i would like xar please thanks GUIDE
[Samsung Galaxy Watch] Idan73:
Share the combination COMBINATION-FT55_R820XXU1ATJ1.tar.md5 and ill test it for you and confirm if it works for 5.5.0.1 or not.

Bricked it already with other combination files (they are all for tizen 4. downgrading causes wifi loss , both in os and in download mode) that are posted around here and revived it with usb odin. so im confident i could do it again.
[Samsung Galaxy Watch] mrjoy:
Hi guys. Today i have changed csc to XAR successfully but spay in watch won't support my card in my country. It only supports US cards, now what should i do? Please help me.
[Samsung Galaxy Watch] mrjoy:
Did you tried with UK version that BP works?
[Samsung Galaxy Watch] Idan73:
Thanks. Will flash tonight and report.
[Samsung Galaxy Watch] Idan73:
One thing though... You mentioned zip and tar files in your original post??? But this is bin? Not near pc to try decompressing, so please explain.

Is this encrypted?
[Samsung Galaxy Watch] tower5:
You need to unzip/decompress....this is what I did to get the combination file !

AS I WROTE, IF YOU OPEN THE LINK in mt original message, you can find the other files ; I did not download those files yet, not being sure to use them nor if effectively needed
[Samsung Galaxy Watch] Idan73:
Yeah ok. When you said and mentioned zip, you meant uncompress bin file. Thought at first that you went too far uncompressing nested files and ended up with base bin file without accompanying files.

<<<for those doing this first time... Stop decompressing at .tar.md5>>> 😂

Got it.

All is well. Officially works for 5.5.0.1 Although there's even newer combination available for purchase, this works fine for current batch of firmwares on Tizen 5 (tested with CTJ5).

2 things to note from your original post regarding procedure.

First, I never uncheck auto reboot. Therefore no need to manually reboot back to recovery after initial combination flash. I leave it alone till it finally boots into combination OS.

Second. Make note if you encounter issue when you want to flash back regular firmware, and you connect to watch, and you get repeated connection timed out in red letters.... You have to change the direct watch connection on your pc from public to private... Disconnect.... Reconnect. Then the connection will be stable.
[Samsung Galaxy Watch] tower5:
Thanks a lot for your test !!

2 points I would ask if possible:

A)Now, considering how low level I feel to be in term of practice, could you help me ( and maybe others...) rewriting completely the procedure to change CSC region including the flash of the right regular firmware?

B)which Region should be the right one to get automatic newest update from Samsung ?

Thanks for your valuable support !!
[Samsung Galaxy Watch] Idan73:
The procedure is exactly as the one shown in YouTube video by TechnoProz.

Edit: upon re-reading your instruction... Yeah it seems you've mixed the order of some steps, so following YouTube video is what you want. Not his files though 😂. His are good for tizen 4.

Also I find his sdb package for some reason not work for me. The one I downloaded from one of the threads here did.

Your combination file for the first flash, sdb commands in the middle and 5.5.0.1 full firmware for the second.

The latest 5.5.0.1 firmware for second flash r420 is posted by @adfree in one of the threads here.

The only thing is to remember if stuck on getting stable wifi when getting ready for second full firmware flash. 2 times it happened to me, and both times my pc would say connected, while watch would say in red 'connection timed out'... Something like that. Going to that connection on pc, right click, properties, and change public to private. Close, disconnect on pc, reconnect.... Stable connection on the phone,... Blue on Odin... Flash.

Anything catastrophically goes wrong... There's a thread about regular Odin USB flashing via pogo pins. Did it 2 times with just stripped USB cable, steady hand, no jig or solder, lots of patience, number of failures in between and head mounted 5x magnifying glasses.

This >>>

(different watch and pinouts but same procedure)

Your second point... Regarding region... It is really not fully known, but historically, it would be Korea KOO and USA XAR. It also depends what you expect form phone.

I came from Canadian version (and for us we don't really need to flash to do initial csc change, as for us the secret code (not *#272*...) still works. Whereas it's disabled for every single other firmware. But we got only barebone crap.

Now for me USA, keeps my Samsung pay (not every card will work because USA app asks for their postal code... I always use 90210 😂), gets me stress thingy, and ecg. No blood pressure. Hopefully faster updates, although barebone Canadian firmware was not that much behind in the past.

Korea gets me everything except there's no Samsung pay.

So I settled on Brazil. Gets me everything (all the features that Korea has, but it is including Samsung pay Brazilian version (while some cards that would not register on USA, do, some that worked on USA, dont. Such is life). Don't expect to redeem those points anytime soon.

I see lots of Germans just want Samsung pay and stress monitor so they switch to Britain and leave it at that.

Personal preference.
[Samsung Galaxy Watch] Idan73:
You forgot to turn on developer mode and debugging on at the beginning.

It is settings/connections/wifi after first boot, not setup connections.

As said previously I flashed with your combination and @adfree ctj5, starting from original ctj5.

I don't know if updates will be pushed as there's no updates past ctj5, so time will tell. Besides I can manually flash. But it should work. Did in the past.

BP and ecg will be loaded on your watch with koo, so there is no pushing involved, but you still need to install modded apk on the phone. The official one will not be found by the watch or your phone in Samsung store. Sorry. How do you work the ecg on xar right now? Or you don't because no sideloading apk?

Brazilian is what I chose. Everyone can have their preference, and auto updates are overrated. I don't mind manually flashing when Odin version available. Never did with a phone, don't mind with a watch.

Brazilian csc product code, can't remember, gotta go to work, search for it in forum, there's a list of all codes, same for active and watch and watch 3. Last one in a list should say Brazil. Don't remember if it's zto? Don't use this unless confirming with the list.

Gotta go.
[Samsung Galaxy Watch] tower5:
Thanks again

So, no way....its a pity...but I cannot sideload apks...so it is not working now ...as it will not work in future even after flashing...I give up

Thanks for your time !!!

Best Regards
[Samsung Galaxy Watch] marus2:
I have just successfully activate SPay on my GWA2 with FT55 combination FW provided by tower5 and official CTI4 fw found somewhere here (it was Under Armour edition). I use BTU CSC (UK). I had tizen 5.5.0.1 and CTI4 FW before.

Right after boot watch immediattely update to CTJ5 version and after that it works as expected.

So don´t worry to update - it works. At least for me.
[Samsung Galaxy Watch] psychofedex:
Hey guys!

Sorry if I'm going to repeat something that was already answered or said somewhere around the forum, but ive spent hours here and I'm still clueless.

Anyway, I have RM-820, it was with hungarian CSC until I switched it to US version so I could have BP and ECG. It was while back with Tizen 4x.

I watched this tutorial.

Now, I want to get it back to Hungarian both due to bugs that I didn't have earlier and Hungarian version being officially supported for BP next month.

So, guy in the tutorial said that we gonna lose WIFI if trying to flash with Tizen 5.5x.

Can anybody please explain to me what should I do now to get it back on stock rom?

What to download (except netodin lol) and what steps should I follow?

Thanks in advance!
[Samsung Galaxy Watch] House079:
DO NOT flash that combination firmware over Tizen 5. That breaks wifi and bluetooth, you won't be able to connect with wifi to computer after flashing this comb over tizen 5. At least that happened in my case.
[Samsung Galaxy Watch] psychofedex:
Hey, its me again.

I asked a few days ago what should I do, I was inpatient and played around, bootlooped the watch the first time but managed to make it work the second time.

I flashed this software, worked like a charm.

Just be sure to watch this tutorial, I tried the first time with a russian tutorial but they have some extra steps that will only either bootloop the watch or you wont be able to update it afterwards.

Cheers!
[Samsung Galaxy Watch] hajiborojobo:
I have samaung pay enabled and i have rooted phone also(magisk). I think, its not working with rooted phones (phone was modified)

Edit:its working with magisk hide- hide all samsung apps+hide magisk(rename client)

Now its problem just with card, i'll create curve gb card.
[Samsung Galaxy Watch] spacebar2011:
I'm in a similar situation. I want to restore my Active 2 from US back to Germany, but haven't been able to find the proper firmware files. Could you tell me where you found the European stock firmware files for Tizen 5.5+ ?

Thanks!
[Samsung Galaxy Watch] adfree:
FT55 aka Combination Firmware for SM-R820 and SM-R830... Tizen 5.5

COMBINATION-FT55_R820XXU1ATJ1.tar.md5

File-Upload.net - COMBINATION-FT55_R820XXU1ATJ1.tar.md5.7z

Datei: COMBINATION-FT55_R820XXU1ATJ1.tar.md5.7z. Die Datei wurde von einem User hochgeladen. Laden Sie auch kostenlos Dateien hoch mit File Upload.

www.file-upload.net

COMBINATION-FT55_R830XXU1ATJ1.tar.md5

File-Upload.net - COMBINATION-FT55_R830XXU1ATJ1.tar.md5.7z

Datei: COMBINATION-FT55_R830XXU1ATJ1.tar.md5.7z. Die Datei wurde von einem User hochgeladen. Laden Sie auch kostenlos Dateien hoch mit File Upload.

www.file-upload.net

Best Regards
[Samsung Galaxy Watch] spacebar2011:
Thanks a lot!

Just want to confirm, is this safe to flash on Tizen 5.5.0.2? I'm on R820XXU1DUA3. Also, where can I find the proper stock German/European firmware to flash after the combination firmware?
[Samsung Galaxy Watch] adfree:
Not tested from DUA3... because I have no DUA3 files to flash again...

No risk no fun. :alien:

OWN RISK!

Best Regards
[Samsung Galaxy Watch] spacebar2011:
I'm happy to try, just don't wanna end up needing a jig if the WiFi gets killed.
[Samsung Galaxy Watch] adfree:
Memo to me...

Downgrade DUA3 to CTI4 on my SM-R820 successfully done...

I have forgotten I need Bootloader sboot.bin downgrade to... so next step is flashing FT55 Combination Firmware ATJ1...

Then again CTI4...

Then manually update to DUA7 from rooted CTI4...

Thats my plan for today.

Best Regards

Edit 1.

I can confirm FT44 ATJ1:

COMBINATION-FT55_R820XXU1ATJ1.tar.md5

Work from CTI4 Firmware... easy to see that sboot.bin Bootloader is changed to Engineer sboot.bin.
[Samsung Galaxy Watch] spacebar2011:
I'm happy to report that I successfully changed CSC from XAR to DBT.

Used the FT55 ATJ1 Combination firmware on DUA3 (5.5.0.2), changed CSC and then flashed CTJ5 stock firmware. Got the DUA3 OTA after that, now waiting for the latest update which is supposed to enable ECG+BP in the EU.

Although, I did use the latest tpk pusher and have the latest SHM app (which contains both the ECG and BP inside) on my GWA2 now, opening either ECG or BP on the watch and clicking on "download app on phone" still tells me "this is not available on your region".

So, the update is clearly not live yet in Germany at least.. SHM is still not available. The wait continues lol.
[Samsung Galaxy Watch] chandradithya:
Hello,

Just to confirm that you flashed CTJ5 Stock firmware just because you did not have the stock DUA3 Files and you took the DUA3 OTA via the Galaxy Wear app.

So if I get hold of the stock DUA3 firmware files I should be able to jump straight to it from the Combination ATJ1 after changing CSC.

@adfree thank you so much for your inputs here and on other threads and also for posting the combination files! First time getting into this Tizen wearable mess and it would have been much harder without your inputs!
[Samsung Galaxy Watch] spacebar2011:
I don't see why not. It should work just fine. You get the OTA right away though, so, there's no real need to go look for the DUA3 files.
[Samsung Galaxy Watch] samiznayut:
How did you get DUA3 after switching to DBT, if there isn't DUA3 on https://doc.samsungmobile.com/SM-R820/DBT/doc.html ? Maybe you received XAR's update? Did you get DUA7 soon?
[Samsung Galaxy Watch] spacebar2011:
DUA3 was never published on the "Notify Update" page. But, everyone in Europe got it, not just me.
[Samsung Galaxy Watch] samiznayut:
The last question (I hope): how did you reset your watch before changing the region? I mean did you reset it from "About watch" or "Recovery" or you just simply pressed "Connect to a new phone"?
[Samsung Galaxy Watch] spacebar2011:
You don't need to reset it. Just follow the procedure to flash the combination firmware, that'll reset the watch anyway.
[Samsung Galaxy Watch] samiznayut:
Thank you @spacebar2011 so much for your help and for all the answers.

Best regards!
[Samsung Galaxy Watch] spacebar2011:
No problem, good luck! :)

Note: You'll probably get DUA7 OTA directly from CTJ5.
[Samsung Galaxy Watch] wh1tekn1ght:
Hi,

OK I read a lot of threads out there to change the CSC but none seem to apply to latest firmware R830XXX1DUA7 (Tizen 5.5.0.2). What do you think is the safest combination firmware to use?

Thanks!
[Samsung Galaxy Watch] ah_cleo:
Hey guys i need help. I wanna change my r800 from XSG to XSP.

I'm on tizen 5.5.0.2 but i cant seem to find the combination files. Can anyone point me some light?
[Samsung Galaxy Watch] litvcom:
Try this method https://xdaforums.com/t/sm-r800-new...release-date-2021-02-25.4240125/post-84577309
[Samsung Galaxy Watch] ah_cleo:
followed this instruction and successfully done it. thanks!
[Samsung Galaxy Watch] enigmaamit:
@spacebar2011 thank you for your confirmation about being able to go from DUA3 to CTJ5 after changing successfuly. Took the same path you did and was able to change CSC and get SPay working. I'm from India, so the BP and ECG are disabled by Samsung although the widgets are present on the watch. Will modify them and get them working later.

Edit: All functions are working - including BP, ECG, Samsung Pay and Spotify

@adfree, thank you for your firmware files.

As soon as the watch was set up, it pinged me to update to DUD1 via OTA. Have held off for now. Just wanted to know if anyone here is on DUD1 who has flashed Combination firmware (F55) ATJ1 or ATK1 on DUD1 and changed CSC successfully (without WiFi or BT bricking)

Also, if anyone has upgraded to DUD1, can you please post if the Tizen version is still 5.5.0.2 or has it changed?
[Samsung Galaxy Watch] adfree:
This is what I know...

Becasue I am on my rooted DUA7 and not tested DUD1 s h it...

A

https://xdaforums.com/t/firmware-r820-r830.4161883/page-4#post-84969131

B

You need Alphabet power and count from 1 to 9 to sort...

FT55 for Tizen 5.5 shi t Comment

COMBINATION-FT55_R820XXU1ATJ1.tar.md5 Free available and tested with DUA3
COMBINATION-FT55_R820XXU1ATK1.tar.md5 I have... but not tested
COMBINATION-FT55_R820XXU1AUA4.tar.md5 Leaked... not downloaded nor tested

I have no plan nor reason yet... to update... I am still on my rooted DUA7...

IMHO FT55 AUA4 match date for DUA3 DUA7...

No idea if AUA4 is safe enough for experiments from DUD1...

Best Regards
[Samsung Galaxy Watch] enigmaamit:
It will be interesting to see if it's safe to flash one of the F55 combination firmwares listed above while on stock DUD1, without bricking WiFi.

I am currently on DUD1 stock firmware post CSC change. All functions working so don't have need to re-flash.

But if I have to change CSC again for whatever reason, I will try with ATK1 or preferably AUA4 combination F55 firmware and report my experience here.
[Samsung Galaxy Watch] fattymcdirty:
Got an R830 from Netherlands with Tizen 5.5.0.2 - and I wanna switch to DBT CSC - is this still safely possible? And if yes, how and with which files? Help would be greatly appreciated!
[Samsung Galaxy Watch] enigmaamit:
What firmware are you on?
[Samsung Galaxy Watch] fattymcdirty:
R830XXU1DUD1 / R830XA1DUD1
[Samsung Galaxy Watch] enigmaamit:
Well, I have the R820 and the latest firmware that I successfully changed CSC was on the DUA3. For the most part the R830 flashing follows the same process.

DUD1 has the same Tizen version as DUA3 (5.5.0.2) so you should be able to use the same combination firmware that has been used by many users here on DUA3 F55 ATJ1 posted by @adfree https://xdaforums.com/t/firmware-r820-r830.4161883/post-84229715 (download the second firmware linked in this post for the R830 - first one is for the R820)

Then, after CSC change, you can flash the DUA3 firmware posted on @Nmc_alves® thread https://xdaforums.com/t/firmware-r820-r830.4161883/

This should be safe as far as the general understanding regarding firmware and Tizen version is concerned.

Having said that, to my knowledge nobody on this forum has reported a successful CSC change on DUD1 yet, so there is an element of risk involved. Either wait for someone else to take the plunge first and report back, or try it yourseld if you're feeling confident and/or adventurous.

But it's your call eventually, and be aware that a bad flash can disable wireless connectivity on the watch and you will then require a USB Odin dock for the watch to revivie it.

Please proceed only after weighing the pros and cons carefully.
[Samsung Galaxy Watch] fattymcdirty:
Mhh... this sounds risky, to be honest :/ So I - sadly - better return this Netherlands-Model.. :(
[Samsung Galaxy Watch] fattymcdirty:
sooo... got another watch. sm-r835f - so the lte model. firmware is ASI7 with tizen 4.0.0.6 - can i somehow change the csc here? it's a swiss model (AUT) and i want to change it to DBT.

@adfree : are you able to help me out?
[Samsung Galaxy Watch] Danil.Ural:
Good day!

I want to share my experience of changing the region.

Initially, we have a watch Samsung Galaxy Watch Active 2 Under Armor Edition, 40 mm, with firmware R830XXU1DUD1 and the Thailand region.

All actions were performed according to this video:

“Odin” and “SDB Tools” were also downloaded there from the description.

Combined firmware "COMBINATION-FT55_R830XXU1ATJ1":

https://xdaforums.com/t/firmware-r820-r830.4161883/post-84229715

Final firmware "R830XXU1DUA3_Tizen_4File_CSC (OXA)":

https://xdaforums.com/t/firmware-r820-r830.4161883/

I did not immediately see that to unpack it I needed "EF FILE EXTRACTOR", I downloaded it here.

During the installation process, no problems arose, except that on the first attempt in SDB Tools, instead of entering the Puch command, I entered “Pull” again (in the videos 5:15 and 6:13).

As a result, on the second attempt, everything works fine, changed the region to SER (Russia), after starting the watch, they immediately offered to download updates to the current version, SPay, Samsung Health monitor, pressure measurement, ECG and other applications started working.

P.S. Sorry, my English is Google Translate) ())
[Samsung Galaxy Watch] enigmaamit:
Thank you so much for confirming a successful flash on DUD1 @Danil.Ural

I'm sure this will provide confidence to others looking to do the same but not sure about it.
[Samsung Galaxy Watch] adfree:
Meanwhile DUE3 is available for 3 CSC:

DBT

KOO

XAR

Only as info...

Notify Update

Best Regards
[Samsung Galaxy Watch] adfree:
For stupid tests... and because boring times in case of Tizen...

My SM-R820 was on DUA7 (rooted)...

I have flashed this FT55:

COMBINATION-FT55_R820XXU1ATJ1.tar.md5

After tiny heartattack.. because I saw red text on screen... I was not fast enough to take Photo...

ATJ1 runs now on my SM-R820...

Need some time for stupid tests... now charging...

Goal is to jump from DUA3 rooted... to DUE3 rooted...

Best Regards
[Samsung Galaxy Watch] adfree:
Memo to me.

Root done on my SM-R820... DUE3...

For me work... :alien:

Best Regards