I've seen similar issues in the forum, but no real solution. I have 5 CMOD A7 boards and only 2 of them behave properly. The other 3 do not accept a program and sometimes disconnect. I get the following errors; ERROR: [Labtools 27-3165] End of startup status: LOW ERROR: [Common 17-39] 'program_hw_devices' failed due to earlier errors. I have tried: - many different USB cables - Different ports on the PC - Powered USB hubs - Vivado Lab 2017.2 and 2018.1 - 2 different bitstream files The boards that work, always works. No matter the cable or USB ports. Anything else I should try?