yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Watch 3] adfree:
[MENTION=4491361]kem1337[/MENTION]

No idea if you know since GWA2 some new "phenomenon"... :rolleyes:

Only US LTE Combination Firmware leaked...

Example...

[B]NO[/B] SM-R825F but SM-R825U
[B]NO[/B] SM-R835F but SM-R835U

But SM-R825F and SM-R823%F user can use the SM-R8.5U FT40 files to get Root access...

Btw... this is all you need... Root access... :D

Suggestions...

A

You can wait... maybe for EVER...

B

You check again and maybe you find "mistake" or you can bypass problem with exisiting FT55 files...

C

We could try "custom" stuff to get Root access...

No idea if you want try with your 400 Euro device. :D

To start your investigation...

Maybe look into LTE Adventure of GWA2 users...

https://xdaforums.com/smartwatch/galaxy-watch/sm-r825f-csc-change-tutorial-t4061905

Maybe you see something...

Best Regards
[Samsung Galaxy Watch 3] kem1337:
What do you mean by:

"But SM-R825F and SM-R823%F user can use the SM-R8.5U FT40 files to get Root access..."

Can I use any combination FW which is not US?
[Samsung Galaxy Watch 3] Kjelstrup:
Googel is your frind

[YOUTUBE]https://www.youtube.com/watch?v=EsshQ1-UIoY&ab_channel=TechnoProz[/YOUTUBE]
[Samsung Galaxy Watch 3] adfree:
[MENTION=4491361]kem1337[/MENTION]

In German I could better explain... :p

Summary for you.

Feel free to find your own solution. :D

According to my tiny knowledge...

IMHO you have allready files which could work...

You have only find how to use them. :D

Tiny hint...

I can root Galaxy Gear S2, S3, GW, GWA and also GWA2...

With only 2 files... Example...

https://xdaforums.com/showpost.php?p=83444935&postcount=924

Maybe for GW3 similar method...

If I would have GW3 LTE... tooooooooooooo expensive for me... so nothing to test in 2020...

First attempt would be:

A

Unpack FT55

B

use only 3 files and create TAR...

OWN RISK!

Best Regards
[Samsung Galaxy Watch 3] kniaz759:
Hi guys,

I bought my GW3 in China SM-R840 and would like to change the region to US, I see there are links to the files here, but since this is my first time with any Samsung product, and first smartwatch I have no idea what are the required steps.

Is there any step by step guide to do this?

Thank you!
[Samsung Galaxy Watch 3] adfree:
[MENTION=10744675]kniaz759[/MENTION]

Please check this post and look at Youtube Video...

https://xdaforums.com/showpost.php?p=83454011&postcount=44

I hope this is helpfull for you. ;)

Best Regards
[Samsung Galaxy Watch 3] kniaz759:
Hi I went through the video and changed the region successfully, but I cant seem to update my watch after.

getting the message "couldn't update software. visit a Samsung customer service station"

Anyone else had this issue?
[Samsung Galaxy Watch 3] adfree:
[MENTION=10744675]kniaz759[/MENTION]

Reason could be, ATF3 or ATF6 required for Samsu.g magic FOTA chain... :rolleyes:

Sorry, but this is Samsu.g """magic""" moments. :rolleyes: :rolleyes:

PM me... maybe I upload ATF6...

Best Regards
[Samsung Galaxy Watch 3] kniaz759:
Thanks, I'll try it again later today and PM you if I get into more trouble.

appreciate the support!
[Samsung Galaxy Watch 3] slavi72:
Do you think the other firmware COMBINATION-FT55_R845FSQU1ATH1 from ... can match the region change in our SGW 3 LTE R-845F? Will the effect be the same as COMBINATION-FT55_R845FSQU1ATG3 from ...? Fail too?
[Samsung Galaxy Watch 3] adfree:
[MENTION=11038429]slavi72[/MENTION]

No idea if Top Secret Undercover Mission...

Maybe please explain what you try to achieve...

A

CSC of your dream ehm wish?

B

CSC on your device...

Reson to ask..

Samsung split into several Region packages... OXA OKA OXX forgotten there more according last generations...

I know at the moment only OXA region leaked...

If you are able to use 7Zip... you can extract file csc.img...

<?xml version="1.0" encoding="UTF-8"?>
<SW-Configuration>
<MobileData>
<PublicName>SM-R845F</PublicName>
<NickName />
</MobileData>
<CustomerDataSet>
<CSCName>R845FOXA</CSCName>
<CSCVersion>1ATFB</CSCVersion>
<NbCustomer>25</NbCustomer>
<CustomerData src="/Customer/EUD/customer.xml" />
<CustomerData src="/Customer/ATO/customer.xml" />
<CustomerData src="/Customer/AUT/customer.xml" />
<CustomerData src="/Customer/BGL/customer.xml" />
<CustomerData src="/Customer/BTU/customer.xml" />
<CustomerData src="/Customer/DBT/customer.xml" />
<CustomerData src="/Customer/EUA/customer.xml" />
<CustomerData src="/Customer/EUB/customer.xml" />
<CustomerData src="/Customer/EUE/customer.xml" />
<CustomerData src="/Customer/EUF/customer.xml" />
<CustomerData src="/Customer/EUR/customer.xml" />
<CustomerData src="/Customer/ITV/customer.xml" />
<CustomerData src="/Customer/LUX/customer.xml" />
<CustomerData src="/Customer/NEE/customer.xml" />
<CustomerData src="/Customer/PHE/customer.xml" />
<CustomerData src="/Customer/PHN/customer.xml" />
<CustomerData src="/Customer/ROM/customer.xml" />
<CustomerData src="/Customer/SEB/customer.xml" />
<CustomerData src="/Customer/SEE/customer.xml" />
<CustomerData src="/Customer/TPH/customer.xml" />
<CustomerData src="/Customer/XEF/customer.xml" />
<CustomerData src="/Customer/XEH/customer.xml" />
<CustomerData src="/Customer/XEO/customer.xml" />
<CustomerData src="/Customer/XEZ/customer.xml" />
<CustomerData src="/Customer/XSK/customer.xml" />
</CustomerDataSet>
</SW-Configuration>

25 CSC...

You can only use CSC which are really exist in csc.img... no Fantasy Dream CSCs... :D

If I know what you are trying to do.. I could try to help...

Please contribute.

I will NOT buy such expensive device and try for you...

Best Regards
[Samsung Galaxy Watch 3] davebert:
Thank you for sharing ! I'm on 845f dbt and would like to change the csc to btu to use pay with curve. Curve card is already here. Tried to change the csc with combination file from easy firmware, but can't finish install it with netodin. Do you have another idea? Regards
[Samsung Galaxy Watch 3] adfree:
Checklist:

A

SM-R845F DBT and BTU are available in OXA package.

:good:

B

To be sure we can check Samsu.g Server...

DBT

http://fota-cloud-dn.ospserver.net/firmware/DBT/SM-R845F/version.xml

BTU

http://fota-cloud-dn.ospserver.net/firmware/BTU/SM-R845F/version.xml

Both latest:

R845FXXU1BTG7/R845FOXA1BTG7/R845FXXU1BTG7

C

R845FXXU1ATFB/R845FOXA1ATFB/R845FXXU1ATFB

ATFB is visible in FOTA Server.

:good:

And seems leaked...

AP_R845FXXU1ATFB_usr.tar.md5
BL_R845FXXU1ATFB_usr.tar.md5
CP_R845FXXU1ATFB_CL1598457_QB16124016_SIGNED.tar.md5
CSC_OXA_R845FOXA1ATFB_usr.tar.md5

IMHO we have all files to do some stupid tests. :cowboy: :cyclops:

Only 1 bad thing... :o

If you are from Germany then IMHO no ehm low chance with Samsung Pay...

IMHO Running Gag with Curve Card... :o

Only as info.

Best Regards
[Samsung Galaxy Watch 3] davebert:
Thx for explanation. Looks good so far, only problem left is the not working combination firmware...

But it sounds like you'd have some other good stupid tests we could try to get btu working ;)
[Samsung Galaxy Watch 3] adfree:
Content of FT55 Combination Firmware from SM-R845

cm.bin
csc.img
dzImage
dzImage-recovery
keystorage.bin
meta-data
modem.bin
nad_fw.bin
nad_refer.bin
param.bin
partition.pit
ramdisk-recovery.img
[COLOR="Green"][B]ramdisk.img[/B][/COLOR]
[COLOR="Green"][B]rootfs.img[/B][/COLOR]
sboot.bin
system-data.img
up_param.bin
user.img
meta-data\1.mf

My first idea would be...

To flash only these 2 files in new TAR:

[COLOR="Green"][B]ramdisk.img[/B][/COLOR]
[COLOR="Green"][B]rootfs.img[/B][/COLOR]

[MENTION=2271504]davebert[/MENTION]

Can you check your Private Message?

Tried to wrote you PM...

Best Regards
[Samsung Galaxy Watch 3] slavi72:
The same problem. I have SM-R845F with csc XEO (and would like BTU (esim and Samsung Pay with Curve works). I bought software from easy-firmware and failed via odin. Now I looked at other firmware on ... and I don't know if is a good firmware. And is it worth spending another $ 19 per download? I am a regular user (not an engineer) and use the csc modification tutorial available on the web. From what you write it is possible to change csc but you need support to help. What kind?
[Samsung Galaxy Watch 3] adfree:
I need brave tester.

Because I have NO GW3.

I would split the idea into 2 files for 2 rounds to be more safe...

Round 1.

With netOdin:

ramdisk.img

Ramdisk from Combination Firmware contain files to disable Security Checks...

Round 2.

With netOdin:

rootfs.img

But you take all risks!

If I made mistake and so on... :D

I can upload...

We can start with Round 1... soon...

Best Regards

Edit 1.

WARNING!

OWN RISK!

This is Ramdisk only... taken from SM-R845F FT55 ATG3

Flash with netOdin:

TEST_smR845F_ramdisk_ONLY.tar

Expected result.

No explosion

IMHO Warranty Void will still:

0 0x0000

This is the theory... now move of brave tester needed. :angel:

[MENTION=11038429]slavi72[/MENTION]
[MENTION=2271504]davebert[/MENTION]

Please try and post result.

Thanx in advance.

If success, I can upload TAR with rootfs.img inside... so we could proceed with danger... :D
[Samsung Galaxy Watch 3] kevinbars:
Is this watch available in my country Pakistan? I have checked only the Samsung store, but there is no option to buy a watch even I go to Samsung care centre there yet not reach this watch. They are also waiting for this

pure net worth
[Samsung Galaxy Watch 3] adfree:
Here is part 2 of my idea... UNTESTED... OWN RISK!

https://www.file-upload.net/download-14287275/TEST_smR845F_rootfs_ONLY.7z.html

Only AFTER Step 1!

https://xdaforums.com/showpost.php?p=83483503&postcount=58

This is the file to flash with netOdin

TEST_smR845F_rootfs_ONLY.tar

Best Regards
[Samsung Galaxy Watch 3] mineirc:
After i did change my R840 region from THO to KOO . Everything work fine but I can't upgrade watch firmware version.My current version is R840OXA1ATF3. Dose anyone have the newest r840 firmware so i can flash using netodin . thank you in advance
[Samsung Galaxy Watch 3] interprises:
changed fw successfully on my gw3!

Now:

CSC: ITV

PRODCODE: SM-R840NZKAEUB
[Samsung Galaxy Watch 3] adfree:
[MENTION=1038216]mineirc[/MENTION]

I have the ATF6 files...

Write Private Message to me... maybe I upload...

Best Regards

Edit 1.

ACR: R840XXU1BTG6
AFR: R840XXU1BTG6
ARO: R840XXU1BTG6
ATO: R840XXU1BTG6
AUT: R840XXU1BTG6
BGL: R840XXU1BTG6
BRI: R840XXU1BTG6
BTU: R840XXU1BTG6
BVO: R840XXU1BTG6
CAC: R840XXU1BTG6
CAM: R840XXU1BTI2
CHC: R840XXU1BTG6
CHO: R840XXU1BTG6
COO: R840XXU1BTG6
DBT: R840XXU1BTG6
ECT: R840XXU1BTG6
EUR: R840XXU1BTG6
ILO: R840XXU1BTG6
XAR: R840XXU1BTG6
ITV: R840XXU1BTG6
KOO: R840XXU1BTH4
KSA: R840XXU1BTG6
LUX: R840XXU1BTG6
MID: R840XXU1BTG6
MWD: R840XXU1BTG6
MXO: R840XXU1BTG6
MYM: R840XXU1BTI2
NEE:
PAK: R840XXU1BTG6
PEO: R840XXU1BTG6
PHE: R840XXU1BTG6
PHN: R840XXU1BTG6
ROM: R840XXU1BTG6
SEB: R840XXU1BTG6
SEE: R840XXU1BTG6
SEK: R840XXU1BTG6
SER: R840XXU1BTG6
SKZ: R840XXU1BTG6
TGY: R840XXU1BTI2
THO: R840XXU1BTI2
TPA: R840XXU1BTG6
TPH: R840XXU1BTG6
TTT: R840XXU1BTG6
TUN: R840XXU1BTG6
TUR: R840XXU1BTG6
UPO: R840XXU1BTG6
XAC: R840XXU1BTG6
XAR: R840XXU1BTG6
XEF: R840XXU1BTG6
XEH: R840XXU1BTG6
XEO: R840XXU1BTG6
XEZ: R840XXU1BTG6
XFA: R840XXU1BTG6
XJP: R840XXU1BTG6
XME: R840XXU1BTG6
XNZ: R840XXU1BTG6
XSA: R840XXU1BTG6
XSE: R840XXU1BTG6
XSG: R840XXU1BTG6
XSK: R840XXU1BTG6
XSP: R840XXU1BTI2
XTC: R840XXU1BTI2
XXV: R840XXU1BTG6
ZTO: R840XXU1BTG6

depend on CSC if ATF3 or ATF6 for valid FOTA update chain required...
[Samsung Galaxy Watch 3] Jivkorusev:
[MENTION=1030585]adfree[/MENTION]

Big Fat Thanks a million. I can't thanks inagh to adree. I can pridly confirm that described methot working just fine on SM-R845F (LTE Version). I already have BTU (UK) CSC on watch originaly located in Bulgaria. Samsung Pay and Spotify working just fine.
[Samsung Galaxy Watch 3] czechuk:
Jivkorusev

What kind of payment card do you use?

Does LTE work in your country?

Can you describe step by step what you did?
[Samsung Galaxy Watch 3] Jivkorusev:
I'm using Curve card.

Yes, 3G and LTE works just fine in my country (Bulgaria) together with Galaxy Watch 3 LTE.

What I did is generaly replicate what TechnoProz show on SM-R840 in his video: https://xdaforums.com/showpost.php?p=83394851&postcount=21

1. I downloaded the Combination file and original Firmware from easy-firmaware.com as shown in the video,

but

the combination file for SM-R845F provided in this site does not work, it alwais fail to flas!

2. To solve this I followed the idea of adfree in this posts:

https://xdaforums.com/showpost.php?p=83483367&postcount=56

https://xdaforums.com/showpost.php?p=83483503&postcount=58

https://xdaforums.com/showpost.php?p=83487029&postcount=60

3. Since the problem with combination file was solved I just proceeded with next steps shown in the video. That's it.

Thanks again to adfree!
[Samsung Galaxy Watch 3] slavi72:
Hi,

Ok, I have:

1. Original firmware from easy-firmware

2. Combination file for SM-845F

3. TEST_smR845F_ramdisk_ONLY (TAR file from adfree)

4. TEST_smR845F_rootfs_ONLY (TAR file from adfree)

and I connect watch with ODIN (just like in video tutorial) and...

It`s a question what do next?

When using the video tutorial, I should upload a Combination file to the column AF in ODIN, but we know that will be fail...

I will be grateful for your help
[Samsung Galaxy Watch 3] adfree:
[MENTION=11038429]slavi72[/MENTION]

Step 1.

TEST_smR845F_ramdisk_ONLY.tar

Select this file only... 1 file in netOdin.

You can use AP to select this file.

Flash/Start

If nothing explode... start again netOdin.

Step 2.

TEST_smR845F_rootfs_ONLY.tar

Now select this 1 file in AP in netOdin.

If all done.

You can proceed with the funny SDB part...

Best Regards
[Samsung Galaxy Watch 3] Iamz:
You have to be on ATF6 to be on the correct update chain for KOO CSC. (fota-cloud-dn.ospserver.net/firmware/KOO/SM-R840/version.xml)

Use netodin to flash ATF6 and you should see the latest update.
[Samsung Galaxy Watch 3] mineirc:
Thanks

---------- Post added at 02:26 PM ---------- Previous post was at 02:15 PM ----------

Thanks
[Samsung Galaxy Watch 3] nokia0master:
Ok i'm make this

Step 1.

Code:

TEST_smR845F_ramdisk_ONLY.tar

Select this file only... 1 file in netOdin.

You can use AP to select this file.

Flash/Start

If nothing explode... start again netOdin.

Step 2.

Code:

TEST_smR845F_rootfs_ONLY.tar

Now select this 1 file in AP in netOdin.

If all done.

You can proceed with the funny SDB part...

now on my display is notyfiApp

how back too normal work.
[Samsung Galaxy Watch 3] adfree:
[MENTION=1111261]nokia0master[/MENTION]

:confused:

Not exact sure what you mean...

Can you add Photo or Screenshot in case of you are managed to get run the Rooted Firmware aka Combination ...

With SDB part I mean this.

Pull and Push 2 files + edit to CSC of your wish...

Short:

A

sdb root on

sdb pull /csa/csc/csc-active-customer.inf

sdb pull /csa/imei/prodcode.dat

B

Now you can edit files on PC...

C

sdb push csc-active-customer.inf /csa/csc/

sdb push prodcode.dat /csa/imei/

This writes back from PC into your Watch...

Please use Threads from GWA2 and the other Gear devices from Samsung... it is ever the same sh it. :D

Also you can study Videos on Youtube...

Best Regards
[Samsung Galaxy Watch 3] nokia0master:
[IMG="sm-g845r"]https://images89.fotosik.pl/421/9cca5a61e65ab77fmed.jpg[/IMG]
[Samsung Galaxy Watch 3] adfree:
[MENTION=1111261]nokia0master[/MENTION]

Perfect, you managed to get Combination/Root. :good: :good:

You can look here:

https://xdaforums.com/smartwatch/galaxy-watch/sm-r825f-csc-change-tutorial-t4061905

Now you can proceed with this:

SDB is here:

https://xdaforums.com/showpost.php?p=74585286&postcount=330

Best Regards
[Samsung Galaxy Watch 3] nokia0master:
and whether someone has the stock firmware and will make it available to me.

Model SM-R845F and i'm and change CSC too USA region ?
[Samsung Galaxy Watch 3] adfree:
SM-R845F OXA Firmware is here:

https://xdaforums.com/smartwatch/samsung-galaxy-watch-3/gwa-3-sm-r845f-oxa-update-t4157971

:good

Hard harder hardestest...

XAR is not inside OXA package...

Please learn how this work...

You can only choose CSC which is inside csc.img file... use 7Zip Tool to extract and learn.

We have successfully "transformed" SM-R825F into SM-R825U and versa vie...

In theory also possible with GW3 LTE...

BUT WARNING!!

This is NOT easy nor very safe... nor we have tested...

RISK! to brick your device... minimum to brick FOTA "Trust Chain"...

Only as hint. ;)

Best Regards
[Samsung Galaxy Watch 3] nokia0master:
what is the best to change the region from this firmware to make EKG and HB work.
[Samsung Galaxy Watch 3] adfree:
You are from Germany?

So you can write PM to me in German...

HB?

You mean Blood Pressure BP... :o

:confused:

Best Regards
[Samsung Galaxy Watch 3] nokia0master:
Yes BP.

not a watch bought in germany and nothing works ecg, bp and spay
[Samsung Galaxy Watch 3] congusto:
If you want Spay to work, you have to change your CSC to a region that supports it AND you will need a credit card from a bankthat supports it.

Spain supports SPay, and oxygen saturation measurement. To change your CSC to Spain (PHE), all you have to do is reset your watch and choose Spain as your region. That works, surprisingly. My watch is Dutch, and the the Netherlands, Spain and Germany are in the same group of countries that you can choose from after a reset. Other countries in that group are Austria, Belgium, France, Italy, Luxemburg, Portugal, and Switserland.

German banks don't support Spay. The British Curve card does, and you can link your German credit card to the Curve card. All you have to think about is to enter a 5 digit zip code for your German card when you link it to your Curve card (credits to [MENTION=8282371]trnow[/MENTION]). This shouldn't be a problem since German zip codes are 5 digits anyway.
[Samsung Galaxy Watch 3] nokia0master:
[IMG="foto"]https://images89.fotosik.pl/422/79614c8b852285a8med.jpg[/IMG] everything works fine thx too all
[Samsung Galaxy Watch 3] slavi72:
I finally managed! Samsung Pay works. A huge, huge thank you to [MENTION=1030585]adfree[/MENTION]. Thank you also [MENTION=2216883]Jivkorusev[/MENTION].

And if someone launched Samsung Pay and activates the Curve card, they can use my code N2939WAE Then you and I will get £ 5 each.
[Samsung Galaxy Watch 3] czechuk:
slavi72

Have you changed CSC? There are no problems with LTE for this reason?

I want Samsung Pay But I'm afraid of losing LTE connectivity.
[Samsung Galaxy Watch 3] slavi72:
[MENTION=2498367]czechuk[/MENTION]

Esim is working without problems. Samsung Pay too. I've sent you private message.

Wysłane z mojego SM-N960F przy użyciu Tapatalka
[Samsung Galaxy Watch 3] manav219:
HI!

I have a Galaxy Watch 3 LTE, with model number SM-R845FOXX1BTH4

fota-cloud-dn.ospserver.net/firmware/INS/SM-R845F/version.xml

I am using a OnePlus 7 Pro, and have setup the esim, by borrowing a friends Galaxy Phone.

I want to install ECG, BP and Samsung Pay, (dunno if its possible to use with a non-samsung phone).

After reading the forum I think only ZTO has all three option

It would be great if someone could guide me and help me with the right files and process to change the CSC from INS to ZTO.
[Samsung Galaxy Watch 3] adfree:
[MENTION=9715949]manav219[/MENTION]

If Samsung Pay is working in India... for you... with your actual Settings...

Then why not simple sideload BP + ECG and isnatll modded APK on your OnePlus 7 Pro...

I am from Germany and I have only Samsung Phones...

So no idea about your Hard + Software combination...

Anyway.

It is much easier to start with BP ECG crap first... with NO Firmware changes... ;)

Best Regards
[Samsung Galaxy Watch 3] manav219:
[MENTION=1030585]adfree[/MENTION]

I have tried sideloading the app, but I get the error.

I even tried to uninstall the pre-loaded BP app, it uninstalled, but still not able to sideload BP+ECG.
[Samsung Galaxy Watch 3] roriii:
I tried to flash TEST_smR845F_ramdisk_ONLY.tar and it did brick my watch. The watch boot but unable to get the download mode AP it stuck on download. Any idea?

Thanks
[Samsung Galaxy Watch 3] adfree:
[MENTION=277892]roriii[/MENTION]

Can you give more details?

Only to be sure... you have SM-R845F not SM-R845U or something else...

Can you make Photo from Odin screen?

Aka Download Mode...

Example:

https://xdaforums.com/showpost.php?p=73607036&postcount=1

And DL wireless is now what? Gone or...

https://xdaforums.com/smartwatch/gear-s3/wireless-mode-enter-gear-s3-sm-r760-t3710855

:confused:

Best Regards
[Samsung Galaxy Watch 3] roriii:
Yes the wireless is gone, same as what you upload,
[Samsung Galaxy Watch 3] roriii:
Picture of Odin wireless mode

Please see the picture attached
[Samsung Galaxy Watch 3] roriii:
Picture of Odin wireless mode

Here is the download mode
[Samsung Galaxy Watch 3] roriii:
See the pins picture of the SM-845 is there any reader writer or anyone can help with the diagram

Tks
[Samsung Galaxy Watch 3] Chellababu:
ATF6 files for GW3

Hi i am in KOO region with ATF3 Version. Not getting updates. Kindly help with ATF6 Combination file so that i can receive OTA updates..

Thanks for your help..
[Samsung Galaxy Watch 3] roriii:
The best and easy way, change your region to XAC, sync the watch tour phone to gain the phone dialer on your watch, make sure to update your watch to the latest update on XAC, when update is done.

Open the dialer on watch and dial : *#243203855#

This should give you access to all CSC then chose the country code you want, In your case KOO , the watch will reset and reboot, after linking the watch you should see a software update available for your region.

Hope this help.
[Samsung Galaxy Watch 3] roriii:
This is for SM-R840 OR R850 only not for LTE MODEL
[Samsung Galaxy Watch 3] corwin_amber:
Unfortunately, this does nothing for me. Maybe I misunderstood.
[Samsung Galaxy Watch 3] enzo-ita:
Hi, I tyred but did not work.

I get a message that says that the operation is not allowed.

"Connection problem or MMI code not valid." It si my translation form Italian so the words may not be precise, but that is the sense.

Thanks
[Samsung Galaxy Watch 3] roriii:
Can you shared what did you tried?
[Samsung Galaxy Watch 3] enzo-ita:
Hi, I did this "Open the dialer on watch and dial : *#243203855#"
[Samsung Galaxy Watch 3] roriii:
It will not work if your watch not on CSC XAC. You must be on the specific CSC. Can you share more about your model and the country of the origin of the watch? This is only for SM-R840/850 MODEL.

Thanks
[Samsung Galaxy Watch 3] corwin_amber:
R840, originally XSK, changed using combination firmware and sdb to DBT.
[Samsung Galaxy Watch 3] babak_1274:
Could anybody here let me know, what is the latest firmware for Germany DBT?

And what is included in this update.....

Thank you in advance!
[Samsung Galaxy Watch 3] enzo-ita:
How To

Hi guys,

I want to clarify something I have learned the hard way.

Change the region in easy, but you should know what is used for.

Net odin: Is a program that allow you to upload the firmware to your watch.

Combination firmware: Is a firmware that MUST be installed before doing anything else. It will allow to use sdb tools. You install with Net Odin. It must be the right one for your watch model.

SDB Tools: This is cmd software that can read two files from your watch and save, "pull "them in your computer. You will need to use the right version (windows, mac ubunto and so on) Once pulled the files, you will mod, with a text editor, the region code and save the files. Then you will upload them to your watch pushing them always with SDB tools "push".

Firmware: Is the actual working firmware that you will upload to your watch after the operation above. Usually is a packed file containing three files that you will upload using Net Odin

I hope this helps the ones like me not very familiar with the procedures required.

Ciao ciao
[Samsung Galaxy Watch 3] congusto:
Here you go: https://doc.samsungmobile.com/SM-R840/DBT/doc.html

For other models/CSC's: Change the model or CSC in the link to yours, use capitals.