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Many many thanks Mike. Removed resistor and module programmed perfectly

Really appreciate your help - fantastic

Thanks Mike - suspect it is not an issue with older tartan is code as signals look good on scope. If I reverse calk and data then flashing progress is slower. If lock bits were set in module then would this be an issue? Suspect module not responding and pull-up on data line just floated line high re...

Still no luck - tried adding a 10k pull-up on PDI data line. Thought this workes as I got FE00 0000 during programming but module code was not flashed. Tried shortening wires - still no luck Run out of ideas so may try modifying a usbasp and try this way.

Has anybody had success programming Orange module on the original Taranis. If lock bits are set then will it erase device? Have spent a few days trying but always get code 0000 0000 so issue with comms. Can see clock and PDI signals on the correct pins - check multiple times and data signal is clear...