Well, having it in hand - would it be hard to manually add 2 additional pins for USB data + and - ? Via drilling small hole and using small piece of metal, or heating metallic pin and pushing it through fake battery, then reinforcing in correct position?

As for battery connectors in fake-battery - isn't it just 100kOhm resistor between BMI pin and ground? The 2nd element - between ground pin and actual ground - isn't resistor for sure - it's either diode, or fuse, or something else, but not resistor (hard to tell from photo).

*Don't* try to flash via Rx pins instead of USB D+ and D-... It won't work, anyway, and IIRC components on Rx thingie are very fragile for out-of-spec voltage - even USB one could fry it easily. For being able to flash, You need to modify "fake battery" to contain pins for USB D+ and D-.

/Estel

/Estel