[Samsung Galaxy Watch 4] adfree:
A

About Combination Firmware... Security crap...

Looks like GW4 uses this eToken crap... some background info is visible here:

DID number is visible in Download wireless Mode... maybe also in Odin aka DL Mode...

It is possible to get DID with ADB...

adb shell getprop ro.boot.em.did

B

Strange... maybe BT and LTE GW4 have same partition layout... PIT

No idea why BT need Radio?

To check this could be helpfull too:

freshbl:/ $ ls /dev/block/platform/10500000.dwmmc0/by-name/ -la
total 0
drwxr-xr-x 2 root root 760 2021-09-01 01:34 .
drwxr-xr-x 3 root root 840 2021-09-01 01:34 ..
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 blcmd -> /dev/block/mmcblk0p17
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 boot -> /dev/block/mmcblk0p18
lrwxrwxrwx 1 root root 20 2021-09-01 01:34 bota -> /dev/block/mmcblk0p6
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 cache -> /dev/block/mmcblk0p33
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 cp_debug -> /dev/block/mmcblk0p35
lrwxrwxrwx 1 root root 20 2021-09-01 01:34 cpefs -> /dev/block/mmcblk0p4
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 dtbo -> /dev/block/mmcblk0p20
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 ebl -> /dev/block/mmcblk0p10
lrwxrwxrwx 1 root root 20 2021-09-01 01:34 efs -> /dev/block/mmcblk0p1
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 fmp_selftest -> /dev/block/mmcblk0p28
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 keydata -> /dev/block/mmcblk0p26
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 keyrefuge -> /dev/block/mmcblk0p25
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 keystorage -> /dev/block/mmcblk0p11
lrwxrwxrwx 1 root root 20 2021-09-01 01:34 ldfw -> /dev/block/mmcblk0p7
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 metadata -> /dev/block/mmcblk0p27
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 misc -> /dev/block/mmcblk0p14
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 nad_refer -> /dev/block/mmcblk0p12
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 omr -> /dev/block/mmcblk0p34
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 optics -> /dev/block/mmcblk0p32
lrwxrwxrwx 1 root root 20 2021-09-01 01:34 param -> /dev/block/mmcblk0p5
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 persistent -> /dev/block/mmcblk0p22
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 prism -> /dev/block/mmcblk0p31
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 radio -> /dev/block/mmcblk0p21
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 recovery -> /dev/block/mmcblk0p19
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 reserved2 -> /dev/block/mmcblk0p29
lrwxrwxrwx 1 root root 20 2021-09-01 01:34 sec_efs -> /dev/block/mmcblk0p2
lrwxrwxrwx 1 root root 20 2021-09-01 01:34 steady -> /dev/block/mmcblk0p3
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 super -> /dev/block/mmcblk0p30
lrwxrwxrwx 1 root root 20 2021-09-01 01:34 tzar -> /dev/block/mmcblk0p9
lrwxrwxrwx 1 root root 20 2021-09-01 01:34 tzsw -> /dev/block/mmcblk0p8
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 uh -> /dev/block/mmcblk0p15
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 uhcfg -> /dev/block/mmcblk0p16
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 up_param -> /dev/block/mmcblk0p13
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 userdata -> /dev/block/mmcblk0p36
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 vbmeta -> /dev/block/mmcblk0p23
lrwxrwxrwx 1 root root 21 2021-09-01 01:34 vbmeta_system -> /dev/block/mmcblk0p24

Why p21?

C

I have some progress with superr und Ubuntu...

https://xdaforums.com/t/linux-free-superrs-kitchen-v1-2-1-5-01-08-2022.3597434/

This looks interesting... but not tested... tooo lazy... maybe for Win Users interesting...

https://xdaforums.com/t/tool-windows-kitchen-crb-v3-0-0-beta14.3947779/

I think i will spent some time with this under Ubuntu:

https://xdaforums.com/t/tool-imjtoo...y-of-ota-images-from-various-vendors.4078159/

imjtool - A tool for unpacking Android boot and system images

Best Regards