Hi, I read the posts. I once worked the Dsp company for years. the questions for Cenicero and Andre09 are quite different. Andre09 have to send the controller back to the China for repaire because the controller you have lost its boot program which is saved in the dsp chip; but no neccessary for Cenicero because your controller just lost some files(80% possibility is the english menu file) which saved in Memory chip, those files can be update via the host program(signtek program you called).
For Cenicero, you need a english version host program and the english menu file and maybe bin files. Normally your cnc router manufacturer should send you english version host program and all file with the controller.
I can tell the Shannon is very experienced for the dsp controller.
For RZNC0501, the dsp company had a special version since last year, which has:"CNC ROUTER", this one cannt be updated Logo file, bin files, otherwise it will lead to error.
yes, for the .dat file is to save all your dsp settings parameter as a file, such as: pulse equivalent, machine size, motor direction, home direction, inputs/outputs properties. If you save it when you got your machine or got the file from your cnc manufacturer, then it will helps in future when the inside parameter changed by mistake or corrupted.
The dsp can get power from the cnc router or the pc, but it is really dangerous to get from both of them, the inside chip needs only DC3.3v. of course the inside power manage chip converts DC5v to DC3.3V, but the chip gets power from both router and PC, it will destory it sometimes. So be careful!