[Asus ZenWatch] SWAT Strachan:
OK, I think I understand how to do this now, but as with any image copying / rooting process, only proceed if you are happy to do so, there is always the slim chance that rooting a watch can have undesired effects, but mine rooted without any issues. So, here we go...

Files that you will need...

KingRoot - https://kingroot-pc.en.uptodown.com/windows/download

ADB & Fastboot - https://developer.android.com/studio/releases/platform-tools

ADB Explorer - Can be found in the Microsoft Store. It only gets a 1* rating but we only need it to look for files and delete created images once we're done with them.

Next, connect your watch to your PC via the charging dock and a suitable USB cable. Now comes the technical stuff which I hope I have understood correctly...

1) Enable developer mode on your Zen watch. You do this by going to settings/about and tapping on the version number 7 times. This should enable the developer options, one of which should be to enable USB debugging (I can't tell exactly where this option is as my watch is running Asteroid OS, but it should be in there somewhere).

2) Extract the ADB tools to a known folder. Open a command prompt in that folder. Type the command "Fastboot oem unlock". This should unlock the bootloader on your watch.

3) Install and run KingRoot, this will root your watch granting you access to all the files on it. Again, this step is done at your own risk, I did it with mine and it worked perfectly, but it would be remiss of me to not give a warning at least. It takes a little while to complete so be patient.

4) Open ADB Explorer and hopefully your watch will be listed in the left-hand panel in the devices list. If it is, click on it and then click the browse button, this should display all of the accessible directories. In my case I see "Internal storage" and "Root", open "Root".

5) At this point we are looking for a folder that contains all of the partitions listed by name. On my watch it is in /dev/disk/by-partlabel, but again, I'm running Asteroid OS. Another possibility is /dev/block/platform/dw_mmc/by-name, but have a browse around the dev folder and subfolders, somewhere in there should be folder with lots of files, some named "boot" "recovery" and "system". Make a note of the path to these files.

6) In the command prompt type "ADB shell", the cursor should change to a # symbol (the first time you do this, type "mkdir images", this will create an images folder on your watch that'll just make things a little easier to navigate in the next steps, you only have to run this command once).

7) Type "dd if=/dev/disk/by-partlabel/boot of=/images/boot.img" but change the "/dev/disk/by-partlabel/boot" to match the path that you found on your watch earlier. If successful this will create a "boot.img" file in the /images/ directory. This can take a while depending on the size of the partition, just give it some time and it will eventually go back to the # prompt (boot and recovery are about 16mb, system is about 500mb so takes longer).

8) Type "Exit" which should return you to a normal command prompt. Now type "ADB pull /images/boot.img", this will copy the boot.img file to your PC (into the same folder as the ADB command file).

9) Use the ADB Explorer program to go to the /images/ folder on your watch and delete the boot.img file, it'll just free up space for more images.

10) Repeat steps 6-9 for the "recovery" and "system" partitions, naming the created image files recovery.img and system.img respectively. Don't forget to delete them off your watch after you have copied them to your PC as the system one takes up quite a bit of space.

11) Take the three image files (boot.img, recovery.img and system.img) and upload them to a sharing site of your choice, then let me know the links to them.

I have tested the above steps with my Zenwatch and have successfully extracted and then re-flashed the images. With luck, and the images you produce, this will allow me to re-flash my watch back to factory standard, then I'll see if there's somewhere where I can host them permanently for anyone else that may need them, as I suspect that I am not the only one looking for them.

Fingers crossed!