Currently Being ModeratedJan 17, 2012 8:19 AM (in response to nukernoone)Re: Problem updating HD300 firmware
I have the same problem with my HD400. L6 Monkey simply says "Unknown" version and the update fails due to USB connection. I have the lastest Line 6 monkey and drivers installed too. I will try intalling Line6 monkey v1.43 and hope it works as silverhead said.