The SSD problem did not happen at the same time. I experienced freezes several times over the year. Usually during watching of videos from H265 files. Sometimes also when subtitles (to a video of any format) are activated, be it the ones embedded inside or be it from external srt files (I am the author of a subtitle downloading software 'Atlas Subtitler', so I activate srt files a lot). The worst crashes are usually the H265 format incompatibilites. Sometimes I still had Samba access and could issue a "systemctl stop enigma2" command and I waited for minutes. Sometimes it worked, sometimes if froze and even 30 minutes later still frozen. Then I was forced to brutally turn the switch off and on. The SSD problems happend months later. The SSD started to show reduced content of folders or even empty folders. First only one then more. The error "Read-only file system" was displayed when I tried to copy back the backup. I sent the Silicon Power A55 2TB back to Silicon Power for repair. They sent me a totally new replacement. My suspicion was maybe some NAND blocks were totally destroyed by too many writes. But, the SSD controller should simply reallocate to other blocks. So I don't really understand why the SSD was broken. That was the second one. The first one was a fake Samsung 870 EVO. I always thought is was a real one but when I looked inside it was a fake. Interestingly the fake looked very similar to the Silicon Power. Maybe the same factory is producing for Silicon Power and for the scammers. Maybe the loss of both SSDs is exactly because the same chinese s**t NANDs are inside. But I use another Silicon Power in my PC and it works flawlessly since years.

All this is why I want to try a reset hardware button instead of a power off and on. I just need to know where to solder it. Actually, it would have been better for the Dreambox design if the original button would do a cold start after maybe 20 seconds pressing or so. Just like Notebooks usually do it.