@tv84 Thanks again.
The device booted with your latest firmware file. To speed things up, i build an adapter with flying wires soldered to the pads on the board and to 2x 24-pin-headers. Now i can switch the TSOP48 programming socket from the programmer to the adapter quickly without solder/desolder the chip every time.
I tried to update the bootloader using the menu. But i couldn't recall a GEL file. I did it like mentioned here:
https://www.eevblog.com/forum/testgear/rigol-dg1022-how-to-update-the-firmware/msg592701/#msg592701After updating the bootloader, the device won't start. I just did the same proceding with the firmware update GEL file and the device started.
The only thing was, some keys were locked. I fixed it like mentioned here:
https://www.eevblog.com/forum/testgear/rigol-dg1022-how-to-update-the-firmware/msg3261146/#msg3261146I just put a USB-Stick with the unlock.scpi file into the device and used the recall function. After that, the keys working normal.
Maybe i have to recalibrate the device.
Many thanks for your effort.
@tv84 I attached the latest NVRAM dump after updating.