Does it come with new Android version?
Hmm.. I am thinking how to backup existing Sailfish... and how to restore it if I flash whole Kali image...
or... just try to flash Linux over Debian... changing 2nd boot option (if it is possible)...
Yes, I see new Android version... Now Android and Kali boots, Sailfish does not boot...
I have first made a backup of sailfish_boot and userdata.img
Then tried flashing only linux_root and linux_boot over existing triple boot Gemini... Didn't work.
Then flashed Kali but replaced root_boot with sailfish_boot and replaced userdata from backup...
Sailfish cannot boot... Maybe it shared data with old debian partition? Any ideas?