Well lets see what we are dealing with.
You have BH 2.1.7 in the flash and use OpenMultiBoot (OMB)
In OMB you have installed OpenBlackhole Image 4.2? and done a FPGA update with chrash HW Error?
Since OBH is based on OE Alliance/PLI or VIX maybe the HW Error is because OMB misstake the OBH for an PLI or VIX image
and downloade and installed wrong drivers I have seen in my OMB Menu many strange name where accully
VuPlus OpenEmbedded 3.0 comes up as OpenBlackhole
If you use sftp instead od regular ftp you can acculy se the kernelname used by OMB
Maybe you can get aroud this problem by first try and Flash Pli 7.0 or latest VIX and later reflash with OBH 4.2
And in th future use the update from Addons Panel for updates and stay clear of the software manager (Chrash manager

)