Nexus 10 half to full bricked

Ok guys, I pretty much hit a wall here so any help would be appreciated. I got manta with Dirty Unicorns 9.5 rom up and running great. Rom slows down, see a new version, all apps are auto backup'd with Titanium, rebooted to TWRP2871, wiped all but media, tried to install rom.... 1st error ...unable to mount system --tries install indefinetly... no rom
2nd error.... tried SkipSoft ToolKit to install stock rom and start from scratch... fail ,, cause i cant install drivers, cant turn on USB debugging, and/or device isnt detected in recovery and download mode.
3rd error.... in still working recovery i found philz recovery and install it... says it formatted system partition but also cannot install rom.

Any thoughts? :confused::(:confused::(