Thanks, a bit more help as following those instructions is that I basically toasted my jolla...

2) Unpack jolla-sailfish-1.0.8.21.tar.xz and put jolla-sailfish-1.0.8.21.img to sdcard

unpack the tar.bz2 file... so I unpack it to the ext4 formatted SD, but what exactly is the second part? Should I label the SD jolla-sailfish-1.0.8.21.img should I unpack it to that named folder in the SD or should I convert the tar to an .img under that name?

I know it's very basic stuff, but having a toasted jolla in less than a month has me down... thanks to that "critical app registry" error and not knowing on my behalf how to follow instructions.

Thanks in advance once again