Another n00b here. Stumbled across the notorious "hack" reference in the review at tequipment.net and followed the hint over to here. I'm one of the "it would be nice to check the hot water heater's insulation but $$$, it would be nice to check the ducting but $$$, etc. etc." gang. I'm definitely a sale that FLIR wouldn't have made if the mod hadn't been available.
The particulars:
FLIR E4 V 1.1, 639128XX 2014-01-21
Cal date 2014-01-22, Estonia
Firmware 1.19.8 and one of the last if not THE last that tequipment.net had from their shipment of 55.
I've only made the resolution mod, so far (RNDIS + FTP to the appropriate config.d), with the e8.cfg built using EzCRC01 (as my tgnyp si dab smoetmies).