Has anyone else had this problem, and more importantly - found a solution? Spent multiple hours today trying to downgrade the firmware on a new MP60 so I can connect it to my WXM/Apex system.  Punch line, Failed. Followed instructions on echotech site&video.   Used Mobius to downgrade firmware, failed.   But no longer visible on Mobius.  Couldn't find it with Echo Smart Live, couldn't find it with Apex WXM.  Re-Upgraded back to latest firmware with Mobius, by upgrading a legacy dev