It seems that the cdmatool is not able to access anymore, can anyone share it?
there you go. Rename the file extention .rar - I couldn't upload it as a rar.
If you can install TWRP and everything via Ubuntu, go ahead.
it seems that it worked, many thanks for your help!
If anyone is the same boat as me, not having a Windows PC, you can go ahead and install Android Studio for Ubuntu (64-bit in my ...
update: this is the website which made me believe that powermat will work on V30 :(