Default Did I softbrick my m7 to death?

Hi All,

I know the title is an oxymoron, but here's the story:

i recently softbricked my HTC M7. Bootloader is in TAMPERED and UNLOCKED. HBOOT Version is 1.54

It's a German provider-free phone, so I tried to install several international 4.4 ROMs including the InsertCoin GE and RevolutionHD GE and also the stock roms with HTCsense by bixie (Odexed).

I did this using ADB-Sideload with the newest Version of both the TWRP-Recovery and the CW-Recovery and EVERY TRY results in an instalation that does not boot past the flying google dots screen.

What am I missing here?

All the best.