I have the same issue, aliexpress DM-1701 with V002.006.
has anyone been brave enough to try the github firmware from daniel5600?
I didn't see any other update in the other referenced thread
viewtopic.php?f=19&t=4662&start=20
I'm looking to update my 1701 to openGD77 but would like to have a working original firmware to revert back to.