I checked the XDA forum a bit, I found this but I'm not sure on how to unlock the bootloader, install TWRP and flash the ROM?
I had once bricked this tablet while playing around with rooting it and I had to take it to a repair shop. So I'd appreciate if there were working unbrick instructions and also working instructions on how to install TWRP.
What kind of servers could I run on this spec?
Interesting use. Unfortunately I haven't found any usage like that. Maybe a home automation system and an Arduino interface?