All fixed! I can't believe how quickly an FRM can be revived with the right equipment. The shop only had for less than 24 hours, and I'm sure it only took a couple of minutes to recode the module. It was also done at "extremely reasonable" cost.
Big thank you to Mperor Tuning shop for doing the work (link below). I picked up the FRM, disconnected the battery and connected the 3 harness connectors into FRM. Immediately I was able to unfold mirrors upon battery reconnection. Lights, windows, everything works! No coding needed.
The shop did excellent job, and do call if you have any electrical (other?) issues, they seem to know BMW quite well.
https://goo.gl/maps/4N63f2UXYJJ4WxXeA