yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Watch 4] iBowToAndroid:
Firmware these days comes in 3 or 4 pieces. AP, BL, CSC, and (for cellular models) CP.

I have a source who can get me any Samsung firmware (for USA models at least) but he charges for each one
[Samsung Galaxy Watch 4] adfree:
Few users are not able to extract splittet 7Zip Archive...

I have no idea how to help...

I am using Windows PC and Tool 7Zip...

And I can extract TAR from 7Zip...

smR880_EVA8_OXM_v1.tar

NO Rocket Science... IMHO Computer Basic...

1 TAR because easier for me...

Still old netOdin NOT support lz4 Compression...

Few other users have problems... as Tool extract also TAR... so many files...

Similar problem...

BASIC Computer knowledge...

Look what is inside...

Try different Tools... different Computers...

Ask family friend or neighbar for help...

Summary.

No Rocket Science

Free Files for:

SM-R860 EVB4

SM-R870 EVA8

SM-R880 EVA8

SM-R890 EVA8

are here:

https://xdaforums.com/t/firmware-an...-csc-change-and.4323469/page-13#post-86476155

Best Regards
[Samsung Galaxy Watch 4] Sorinbalcon:
SM-R870 EVA8

SM-R880 EVA8

SM-R890 EVA8 it works perfectly. smR880 is much smaller, there are 2 variants and I can't unzip it. I tried with all the programs :((( .
[Samsung Galaxy Watch 4] adfree:
@Sorinbalcon

I wrote yesterday or few hours ago Conversation formerly known as Private Message...

Are you able to see this and can you please answer Conversation...

(Upper right Corner near your nickname...)

Then we can try to solve your problem...

My last aller last Option is to reupload 1 Single 7Zip *.7z

Better solution is. User is able to unpack alone at home... with existing files.

Best Regards
[Samsung Galaxy Watch 4] adfree:
smR880_EVA8_OXM_v1.7z.001.abc
smR880_EVA8_OXM_v1.7z.002.abc

You downloaded 2 files with fileextension:

.abc

Now use Himmel and H.lle to rename these 2 files into 7Zip valid... because they are splittet... 1 Archive splittet into 2 files...

Goal 1 is to rename to:

smR880_EVA8_OXM_v1.7z.001
smR880_EVA8_OXM_v1.7z.002

Now IMHO valid to unpack for 7Zip Tool...

Goal 2 is to extract only the TAR file inside:

smR880_EVA8_OXM_v1.tar

Good Luck.

Best Regards
[Samsung Galaxy Watch 4] CoWBoy2022:
Hi Guys, does anyone have the firmware for Samsung watch 4 smR890X ( AP, BL, CSC, ..)
[Samsung Galaxy Watch 4] adfree:
Notify Update

GW5 is also only Android 11...

model_name=SM-R900
source_ap_file=AP_R900XXU1AVF5_CL24457038_QB52943709_REV00_user_low_ship_MULTI_CERT_meta_WATCH_OS11.tar.md5
source_bl_file=BL_R900XXU1AVF5_CL24457038_QB52943709_REV00_user_low_ship_MULTI_CERT.tar.md5
source_cp_file=
source_csc_file=CSC_OMC_OXM_R900OXM1AVF5_CL24457038_QB52943709_REV00_user_low_ship_MULTI_CERT.tar.md5

target_ap_file=AP_R900XXU1AVG5_CL24717481_QB54075118_REV00_user_low_ship_MULTI_CERT_meta_WATCH_OS11.tar.md5
target_bl_file=BL_R900XXU1AVG5_CL24717481_QB54075118_REV00_user_low_ship_MULTI_CERT.tar.md5
target_cp_file=
target_csc_file=CSC_OMC_OXM_R900OXM1AVG5_CL24717481_QB54075118_REV00_user_low_ship_MULTI_CERT.tar.md5

current_version=R900XXU1AVF5/R900OXM1AVF5/
updated_version=R900XXU1AVG5/R900OXM1AVG5/
dummy_version=R900XXU1AVG5.DM/R900OXM1AVG5/
source_os_version=11
target_os_version=11
source_ap_build_date=Wed Jun 15 22:27:16 KST 2022
target_ap_build_date=Mon Jul 18 13:58:51 KST 2022
is_manual_build=N
security_patch_version=2022-07-01
csc_information=OXM(ACR AFR ARO ASA ATO AUT BGL BNG BRI BTU BVO CAC CAM CHO CIS COO DBT DKR ECT EGY EUR EUX ILO INS INU ITV KOO KSA LTA LUX MEA MID MRU MWD MXO MYM NEE NPL PAK PEO PHE PHN ROM SEB SEE SEK SER SIO SKZ SLK SWA TGY THO TPA TPH TTT TUN TUR UPO UYO XAA XAC XEF XEH XEO XEZ XFA XJP XME XNZ XSA XSE XSG XSK XSP XTC XXV ZTO)
[Samsung Galaxy Watch 4] iBowToAndroid:
X is always demo model I think....
[Samsung Galaxy Watch 4] iBowToAndroid:
Correct. I can access files already if anyone is interested
[Samsung Galaxy Watch 4] ksbalajee:
Can someone share the firmware of RM-875F, Indian LTE variant? I tried to change the CSC to Russia and I'm not getting a single update ever since, even Google Assistant is not showing up in play store.
[Samsung Galaxy Watch 4] adfree:
R870XXU1AUGE/R870OXM1AUGE

R870XXU1BUH9/R870OXM1BUH9

R870XXU1BUI5/R870OXM1BUI5

R870XXU1CUIE/R870OXM1CUIE

R870XXU1CUJ2/R870OXM1CUJ2

R870XXU1DUJA/R870OXM1DUJA

R870XXU1DUK1/R870OXM1DUK1

R870XXU1DULB/R870OXM1DULB

R870XXU1EVA8/R870OXM1EVA8

R870XXU1EVB4/R870OXM1EVB4

R870XXU1FVC8/R870OXM1FVC8

Please.

Maybe somebody has older leaked Firmware for SM-R870.

I have only EVA8 and my f$%ing FOTA...

Need files for study.

Thanx in advance.

Best Regards
[Samsung Galaxy Watch 4] Sorinbalcon:
where did you upload it? I kept looking and I can't find it. can you please give me the link?

thanks a lot
[Samsung Galaxy Watch 4] Sorinbalcon:
I unzipped the files with 7 zips but it tells me that one of them is not an archive. can you please help me with the full firmware? with is it for the other watches? the other firmwares worked perfectly but I can't combine the 2 R880 archives
[Samsung Galaxy Watch 4] adfree:
@Sorinbalcon

Mercy.

I am NOT willing to waste my time...

AGAIN.

Rename 2 files... then unpack

https://xdaforums.com/t/firmware-an...-csc-change-and.4323469/page-23#post-87271517

This is NO Rocket Science...

I have NO idea where exact you fail...

I have no Crystal Ball.

And I have also other things to do...

I will NOT reupload...

LinkS are still valid.

Best Regards
[Samsung Galaxy Watch 4] Sorinbalcon:
Thank you very much for your help. I succeeded. I made a mistake when unzipping. you guys are great. thank you for your patience
[Samsung Galaxy Watch 4] adfree:
For study...

Combination Firmware FU ehm FACtory for SM-R870

File on MEGA

mega.nz

COMBINATION_FAC_FBR0_R870XXU1AVE2_FACFAC_CL24349936_QB52279853_REV00_user_mid_noship_MULTI_CERT.tar.md5

A

We can not use fully... as Security crap... to prevent FAC Firmware...

B

Seems no Root...

C

I was able to use boot.img and recovery.img and few APKs with help of Magisk and Root...

Only as info.

Best Regards

Edit 1.

Here info about eToken and why we can't fully flash this FAC...

https://xdaforums.com/t/firmware-an...-csc-change-and.4323469/page-12#post-86431875
[Samsung Galaxy Watch 4] ZlaWox:
Hey guys I just got this new Watch 4 and it's model SM-R870NZKAXAA, and I would like to use Samsung Pay but the Russian version since I got russian banks, and I was wondering if there is a way to make it work, thx for help

NB: it's the Bluetooth version so I can't run the LTE version command in dial
[Samsung Galaxy Watch 4] TheIntruder:
Look here...

https://xdaforums.com/t/restriction...ce-restriction-removed-17th-aug-2022.4322527/
[Samsung Galaxy Watch 4] adfree:
CSC change related... not tested nor I understand fully how it work...

https://xdaforums.com/t/tool-samsung-your-frp-frp-removal-tool-updated-5-5-2020.4439497/

Will later do some test(s)...

Best Regards
[Samsung Galaxy Watch 4] adfree:
<ID:0/004> Added!!
<ID:0/004> Odin engine v(ID:3.1401)..
<ID:0/004> File analysis..
<ID:0/004> Total Binary size: 117 M
<ID:0/004> SetupConnection..
<ID:0/004> Initialzation..
<ID:0/004> Get PIT for mapping..
<ID:0/004> Firmware update start..
<ID:0/004> NAND Write Start!!
<ID:0/004> SingleDownload.
<ID:0/004> boot.img
<ID:0/004> dtbo.img
<ID:0/004> keystorage.bin
<ID:0/004> ldfw.img
<ID:0/004> recovery.img
<ID:0/004> sboot.bin
<ID:0/004> tzar.img
<ID:0/004> tzsw.img
<ID:0/004> uh.bin
<ID:0/004> up_param.bin
<ID:0/004> RQT_CLOSE !!
<ID:0/004> RES OK !!
<ID:0/004> Remain Port .... 0
<ID:0/004> Removed!!
<OSM> All threads completed. (succeed 1 / failed 0)

Tiny Adventure...

:cowboy:

Tried to update my EVA8 SM-R870 with few files from FOTA DELTA... FVD4...

Result hang on Screen with "not running Official blabla"...

Then I realized stupid me not charged Battery... only 15 % left...

I was able to quick take files from EVA8... and Watch alive again...

Now charging for more stupid tests...

<ID:0/004> Added!!
<ID:0/004> Odin engine v(ID:3.1401)..
<ID:0/004> File analysis..
<ID:0/004> Total Binary size: 123 M
<ID:0/004> SetupConnection..
<ID:0/004> Initialzation..
<ID:0/004> Set PIT file..
<ID:0/004> DO NOT TURN OFF TARGET!!
<ID:0/004> Get PIT for mapping..
<ID:0/004> Firmware update start..
<ID:0/004> NAND Write Start!!
<ID:0/004> SingleDownload.
<ID:0/004> boot.img
<ID:0/004> cache.img
<ID:0/004> dtbo.img
<ID:0/004> keystorage.bin
<ID:0/004> ldfw.img
<ID:0/004> metadata.img
<ID:0/004> misc.bin
<ID:0/004> omr.img
<ID:0/004> optics.img
<ID:0/004> recovery.img
<ID:0/004> sboot.bin
<ID:0/004> tzar.img
<ID:0/004> tzsw.img
<ID:0/004> uh.bin
<ID:0/004> up_param.bin
<ID:0/004> userdata.img
<ID:0/004> vbmeta.img
<ID:0/004> vbmeta_system.img
<ID:0/004> RQT_CLOSE !!
<ID:0/004> RES OK !!
<ID:0/004> Remain Port .... 0
<ID:0/004> Removed!!
<OSM> All threads completed. (succeed 1 / failed 0)

SOSdesasterRepair TAR only without prism.img and super.img.

So - 2 files... the 2 biggest files...

USB cable connected... so ODIN action...

Best Regards

Edit 1.

Seems I have something like this:

https://xdaforums.com/t/e-pdp-lstat-c____-pdp_b__-0-no-pdp-scenario.4093251/

Maybe I can find what no PDP sceanrio means...

Or by Enemenmuh I can find why...
[Samsung Galaxy Watch 4] adfree:
About eToken... Combination Firmware...

Look at Photo:

https://xdaforums.com/t/change-csc-of-galaxy-watch-5.4486523/#post-87372753

Seems it is possible to erase something... maybe steady.bin dead by some action...

Result is "Allow FAC"

Photo from SM-R875F...

User told no luck with SM-R875U Firmware... as Modem not work...

I think he mean eSIM...

He not test Combination Firmware... but I am sure it could work...

No idea if netOdin is enough or only via USB cable...

About CSC change...

Tried few "free" Tools...

Seems Modem COM Port required...

Not sure I am tooooo lazy to test my Phones...

Example:

SamFw_FRP_Tool_v3.1.zip

This I was able to start without Virus Warning...

The other Tool from here:

https://xdaforums.com/t/tool-samsung-your-frp-frp-removal-tool-updated-5-5-2020.4439497/

Antivir remove DLL...

But main problem for me... seems 64 bit Tool...

And my Test Notebook only 32 bit... Windows 7...

So not start...

I am tooooo lazy to check with other PC...

Best Regards

Edit 1.

Oh, Developer answered...

https://xdaforums.com/t/tool-samsun...updated-5-5-2020.4439497/page-3#post-87366403

Not direct to my Question... but this is exact what other Tool suggest...

You need MTP or crap to see Modem Driver...

No idea if it is possible on GW4 and/or GW5...

I have heavy problems to enable ADB over USB cable...

So IMHO this will be not easier...

Best Regards
[Samsung Galaxy Watch 4] adfree:
Before I waste my time with 4 GB super.img...

I will waste some time with smaller prism.img...

A

from EVA8 not extractable with 7Zip so additional steps required like imjtool IMHO...

B

I am unsure if I can use netOdin or Odin or dd...

C

I am toooo stupid to show proper my findings... I am using TAB in Editor...

Filename/inside Firmware Partition inside FOTA/Delta as Full File inside FOTA/Delta as "Patch"
boot.img p18 -------------> boot.img.p
cache.img p33 NO not as FILE
dtbo.img p20 yes
PIT partition... NO not as PIT file
keystorage.bin p11 yes
ldfw.img p7 yes
metadata.img p27 NO not as FILE
misc.bin p14 NO not as FILE
omr.img p34 NO not as FILE
optics.img p32 -------------> optics.patch.dat
prism.img p31 -------------> prism.patch.dat
recovery.img p19 -------------> recovery-from-boot.p inside "system"
sboot.bin yes
super.img p30 -------------> odm.patch.dat + product.patch.dat + system.patch.dat + vendor.patch.dat
tzar.img p9 yes
tzsw.img p8 yes
uh.bin p15 yes
up_param.bin p13 yes
userdata.img p36 NO not as FILE
vbmeta.img p23 yes
vbmeta_system.img p24 yes

Maybe somebody have better idea...

D

dump via netcat su x x too

Damn SM-R870 stopps for cooling...

Stops on different sizes... 2400 3200 and biggest was 5000 MB +

In main... GW4 su xxx

Best Regards
[Samsung Galaxy Watch 4] adfree:
Okidoki...

Seems I have to go the dd way...

After so much trouble with netcat direct to PC... I am going the good old way...

Okay still tooo hot bigger 3000 MB...

freshbl:/sdcard # dd if=/dev/block/mmcblk0p30 of=/sdcard/dumpSUPER.bin
10485760+0 records in
10485760+0 records out
5368709120 bytes (5.0 G) copied, 222.376750 s, 23 M/s
freshbl:/sdcard # exit
freshbl:/ $ exit

D:\Android\ADB>adb pull /sdcard/dumpSUPER.bin
[ 37%] /sdcard/dumpSUPER.bin

But for prism.img perfect way...

D:\Android\ADB>adb shell
freshbl:/ $ su
freshbl:/ # dd if=/dev/block/mmcblk0p31 of=/sdcard/dumpPRISM.bin
1228800+0 records in
1228800+0 records out
629145600 bytes (600 M) copied, 34.618687 s, 17 M/s
freshbl:/ # exit
freshbl:/ $ exit

D:\Android\ADB>adb pull /sdcard/dumpPRISM.bin
/sdcard/dumpPRISM.bin: 1 file pulled. 2.5 MB/s (629145600 bytes in 237.542s)

Btw. only this dumped p31 dump was able to be patched...

imjtool have some additional Bytes... and fail...

But IMHO I have now prism.img from FVD4...

Soon I will write p31 via dd and look if my SM-R870 EVA8 will explode or accept this FVD4 file(s)...

Best Regards

Edit 1.

Oh... tiny correction... seems generated AVB valid file... so will try to flash via Odin...

Edit 2.

Ohoh.. wrong idea...

Odin hangs and not finish after many minutes...

Seems not possible to reach recovery... automatic into "Kies Mode"...

I was able to flash Original EVA8 prism... so SM-R870 still alive for more stupid ideas...

Edit 3.

Added Pic from up_param... this is how it looks + some cryptic Battery info
[Samsung Galaxy Watch 4] adfree:
I am tiny step closer to FVD4...

D:\Android\ADB>adb push prismX.img /sdcard
prismX.img: 1 file pushed. 1.1 MB/s (629145600 bytes in 533.692s)

D:\Android\ADB>adb shell
freshbl:/ $ su
freshbl:/ # cd /sdcard
freshbl:/sdcard # dd if=/sdcard/prismX.img of=/dev/block/mmcblk0p31
1228800+0 records in
1228800+0 records out
629145600 bytes (600 M) copied, 68.742835 s, 8.7 M/s
freshbl:/sdcard # reboot

Rebooted proper and showed FVD4 under CSC... after:

*#1234#

In Standalone Mode...

Now trying to Factory Reset and look if pairing with Phone possible or...

Best Regards

Edit 1.

Nice.

This seems to work.

Positive Sideeffect. No f%$ing FOTA update...

I am only scared... because prism.img was unmodified "Original"...

And for super.img I have many things to prepare... and maybe Security bypass mandatory...

Autch...
[Samsung Galaxy Watch 4] adfree:
Oh.

Samsung not able to add devices to RTL... but they release GW5 Kernel Source...

Samsung Open Source

opensource.samsung.com

SM-R905U_NA_Opensource.zip
SM-R915U_NA_Opensource_R915USQU1AVG6_diff.zip
SM-R925U_NA_Opensource_R925USQU1AVG6_diff.zip

No idea if also GW4 config blabla to build inside...

Only as info...

Best Regards
[Samsung Galaxy Watch 4] dad6534:
Could you share the stock firmware of SM-R925F (GW5 Pro International variant)?
[Samsung Galaxy Watch 4] iBowToAndroid:
I can get access to 1DUK1

No, I don't have access to F model firmware
[Samsung Galaxy Watch 4] dad6534:
Thanks for your reply. Any chance we could change the CSC of U model so that it could recognize the networks outside the United States? I currently have GW5 U model, but it doesn't get activated by Canadian carriers.
[Samsung Galaxy Watch 4] iBowToAndroid:
I have no idea how to change the CSC on a watch
[Samsung Galaxy Watch 4] gr_nik81:
i have Samsung Galaxy Watch 4 LTE (SM-R875F) CSC (ITALY) i live in Greece. I used E-SIM greek carrier [Cosmote] but incoming calls and outgoing no works. Internet data and sms works fine. is this problem carrier support or samsung firmware?

I have latest firmware:

Notify Update
[Samsung Galaxy Watch 4] adfree:
Since Tizen...

I have never any Watch nor Phone with eSIM.

So I have 0 own knowledge about eSIM.

All I "know" is eSIM is more joke... as easy to handle.

I love my old SIM cards. I can hold them with my big fat fingers.

I can cut them if they are tooo big after 20 years...

eSIM sounds more pia... with all this Security Region Lock crap...

Sorry, my private opinion.

Best Regards
[Samsung Galaxy Watch 4] ZlaWox:
Hey guys, pls is there any way I can change my SM-870 CSC to SER, mine is R870XXU1FVD4 and XAA
[Samsung Galaxy Watch 4] adfree:
freshbs:/ $ cat /proc/partitions
major minor #blocks name

1 0 8192 ram0
1 1 8192 ram1
1 2 8192 ram2
1 3 8192 ram3
1 4 8192 ram4
1 5 8192 ram5
1 6 8192 ram6
1 7 8192 ram7
1 8 8192 ram8
1 9 8192 ram9
1 10 8192 ram10
1 11 8192 ram11
1 12 8192 ram12
1 13 8192 ram13
1 14 8192 ram14
1 15 8192 ram15
254 0 992464 zram0
179 0 15267840 mmcblk0
179 1 8192 mmcblk0p1
179 2 8192 mmcblk0p2
179 3 4096 mmcblk0p3
179 4 8192 mmcblk0p4
179 5 8192 mmcblk0p5
179 6 98304 mmcblk0p6
179 7 8192 mmcblk0p7
259 0 1536 mmcblk0p8
259 1 6656 mmcblk0p9
259 2 8192 mmcblk0p10
259 3 512 mmcblk0p11
259 4 1024 mmcblk0p12
259 5 4096 mmcblk0p13
259 6 2048 mmcblk0p14
259 7 2048 mmcblk0p15
259 8 4096 mmcblk0p16
259 9 512 mmcblk0p17
259 10 36864 mmcblk0p18
259 11 54272 mmcblk0p19
259 12 8192 mmcblk0p20
259 13 51200 mmcblk0p21
259 14 512 mmcblk0p22
259 15 512 mmcblk0p23
259 16 512 mmcblk0p24
259 17 16384 mmcblk0p25
259 18 16384 mmcblk0p26
259 19 32768 mmcblk0p27
259 20 4 mmcblk0p28
259 21 5628 mmcblk0p29
259 22 5242880 mmcblk0p30
259 23 614400 mmcblk0p31
259 24 40960 mmcblk0p32
259 25 204800 mmcblk0p33
259 26 20480 mmcblk0p34
259 27 5120 mmcblk0p35
259 28 8732672 mmcblk0p36
253 0 3824976 dm-0
253 1 84760 dm-1
253 2 146616 dm-2
253 3 4248 dm-3
253 4 3764540 dm-4
253 5 83340 dm-5
253 6 144220 dm-6
253 7 4096 dm-7
253 8 604620 dm-8
253 9 40236 dm-9
253 10 8732672 dm-10

Not sure if less dm before GVH2...
[Samsung Galaxy Watch 4] CoWBoy2022:
Hi i have firemware of samsung galaxy watch 4.tar plz how can i flash firmware
[Samsung Galaxy Watch 4] kevinjansen:
Dear Sir,

Can you re-upload the SM-R870 firmware file?

The links aren't working anymore..

Thanks in advance!

Kind regards,

Kevin.
[Samsung Galaxy Watch 4] adfree:
A

I was able to fix my FOTA Update problem on my SM-R870 and my SM-R860...

SM-R860 stupid me set something and disabled access to Recovery... only black screen...

Long time ago I did something stupid...

Only realized how deadly... as I was not able to finish Update to GVH2...

Solution for my SM-R860:

Bootloader unlock... this Reset param etc and Recovery is avalaible again...

Then lock Bootloader again...

Knox NOT dripped because nothing flashed...

B

My Update Problem with SM-R870 was deeper because rooted...

Solution for me:

Bootloader Lock

Then downgrade via Odin to DUK1... via USB cable...

Then FOTA worked...

DUK1 ---> FVD4 ---> GVH2

And my Root with help of Magisk 24.3 also work.

C

I have nothing tested under DUK1... not sure if same result. If flashed EVA8 files to my SM-R870... EVA8.

But as FOTA work... correctly...

This means sboot.bin downgrade really work.

From EVA8 to DUK1

Only as info.

Best Regards
[Samsung Galaxy Watch 4] Lucas0511:
This video explains how to gain access to "non-supported" eSIM of independent carriers the world over
[Samsung Galaxy Watch 4] adfree:
SM-R870 DUK1

File on MEGA

mega.nz

SM-R870 EVA8

File on MEGA

mega.nz

Here is DUK1... older as EVA8.

I can confirm full downgrade possible with Bootloader sboot.bin ...

This fixed my FOTA problem.

So FOTA update from DUK1 to FVD4 to GVH2 with success.

Tested only via USB cable and Odin.

I have NO idea if same result with netOdin.

Also NO idea if newer Firmware also can full downgrade back to DUK1...

For instance latest GVH2.

Only as info.

Best Regards
[Samsung Galaxy Watch 4] adfree:
Memo to me:

SM-R860

[ro.sf.lcd_density]: [320]

SM-R870

[ro.sf.lcd_density]: [340]

Because this is really helpfull to change density... to play with Phone Android Apps for instance...

adb shell wm density 235

User gave me nice hint for SM-R860...

So need some time to understand what to set for density 340.. is "better"...

Edit 1.

Some Google search result(s):

Display density on Android | blog.mbirth.de

Edit 2.

D:\Android\ADB>adb shell
freshbl:/ $ wm density reset
freshbl:/ $ wm --help
Unknown command: --help
255|freshbl:/ $ wm -h
Window manager (window) commands:
help
Print this help text.
size [reset|WxH|WdpxHdp] [-d DISPLAY_ID]
Return or override display size.
width and height in pixels unless suffixed with 'dp'.
density [reset|DENSITY] [-d DISPLAY_ID]
Return or override display density.
folded-area [reset|LEFT,TOP,RIGHT,BOTTOM]
Return or override folded area.
scaling [off|auto] [-d DISPLAY_ID]
Set display scaling mode.
dismiss-keyguard
Dismiss the keyguard, prompting user for auth if necessary.
set-user-rotation [free|lock] [-d DISPLAY_ID] [rotation]
Set user rotation mode and user rotation.
dump-visible-window-views
Dumps the encoded view hierarchies of visible windows
set-fix-to-user-rotation [-d DISPLAY_ID] [enabled|disabled]
Enable or disable rotating display for app requested orientation.

Edit 3.

So Value 72 is smallest I can set...

D:\Android\ADB>adb shell wm density 10
Error: density must be >= 72

D:\Android\ADB>adb shell wm density 72
[Samsung Galaxy Watch 4] dad6534:
Thank you. Would you mind to share or refer the link of the video please?
[Samsung Galaxy Watch 4] Lucas0511:
Sorry thought had added the link - find it here
[Samsung Galaxy Watch 4] sergey1977:
i'm trying to launch but I haven't succeed with that

shell am broadcast -W -a android.provider.Telephony.SECRET_CODE -d android_secret_code://9920
[Samsung Galaxy Watch 4] adfree:
@sergey1977

First test result... without Root:

D:\Android\ADB>adb shell am broadcast -W -a android.provider.Telephony.SECRET_CODE -d android_secret_code://9920
Broadcasting: Intent { act=android.provider.Telephony.SECRET_CODE dat=android_secret_code://9920 flg=0x400000 }

Exception occurred while executing 'broadcast':
java.lang.SecurityException: Permission Denial: not allowed to send broadcast android.provider.Telephony.SECRET_CODE from pid=6271, uid=2000
at com.android.server.am.ActivityManagerService.broadcastIntentLocked(ActivityManagerService.java:16621)
at com.android.server.am.ActivityManagerService.broadcastIntentLocked(ActivityManagerService.java:16479)
at com.android.server.am.ActivityManagerService.broadcastIntentWithFeature(ActivityManagerService.java:17338)
at com.android.server.am.ActivityManagerShellCommand.runSendBroadcast(ActivityManagerShellCommand.java:746)
at com.android.server.am.ActivityManagerShellCommand.onCommand(ActivityManagerShellCommand.java:198)
at android.os.BasicShellCommandHandler.exec(BasicShellCommandHandler.java:98)
at android.os.ShellCommand.exec(ShellCommand.java:44)
at com.android.server.am.ActivityManagerService.onShellCommand(ActivityManagerService.java:10970)
at android.os.Binder.shellCommand(Binder.java:929)
at android.os.Binder.onTransact(Binder.java:813)
at android.app.IActivityManager$Stub.onTransact(IActivityManager.java:5070)
at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:2980)
at android.os.Binder.execTransactInternal(Binder.java:1159)
at android.os.Binder.execTransact(Binder.java:1123)

Second attempt with my rooted SM-R870 GVH2

D:\Android\ADB>adb shell
freshbl:/ $ su
Permission denied
13|freshbl:/ $ su
freshbl:/ # am broadcast -W -a android.provider.Telephony.SECRET_CODE -d android_secret_code://9920
Broadcasting: Intent { act=android.provider.Telephony.SECRET_CODE dat=android_secret_code://9920 flg=0x400000 }
Broadcast completed: result=0
freshbl:/ #

Thank you very much sergey1977.

I will try other Codes...

Best Regards