Hello Carrington,
First of all: Many, many thanks for the super useful links!!!
Now I would like to tell you about my results.
My oscilloscope was completely dead. With the contacts on the board I was able to build the J-Tag interface to the Oszi via a Bus Blaster 3 interface and also connect to the processor with OPENOCD. The soldering of the cables was difficult and you should have some soldering experience. But I was not able to flash the BIN-file via OPENOCD.
What should the command for flashing the bin file look like in OPENOCD? Does anyone have an idea?
Since I still have an old laptop with a parallel interface, I have now gone to the 2nd possibility. Now I followed exactly the instructions of VAS455 from the forum of 'radiokot.ru'. With the parallel interface this was possible with H-JTAG without any problems.
Conclusion. .. my WONS DS 7102 now runs again. The next step is to change the language to English. I hope this works out too.
To all users who have the same problem ... tries it.
Greetings
JoergMK