If you had actually read the wiki on Updating the tablet firmware you would have come across this section. To hazard a guess at the windows command, I'd say: Code: flasher-3.5 -F <firmware-image> --flash-only=kernel -f -R If you only want kernel-power v42 then ONLY ENABLE TESTING, I have already explained this. Each repository holds software, there may be different versions of the same software in each repo. The higest version of kernel-power to be accepted to testing was v42, therefore you will only get v43+ if you enable the devel repository.
flasher-3.5 -F <firmware-image> --flash-only=kernel -f -R