Thread: Convert fenix 5S/5/5X Plus to D2 Delta S/Delta/Delta PX

Very helpful.

[Answered my own question. I was looking at the software for the wrong Fenix model with respect to 1014/1015.]

All said if I understand correctly then that I just need to rename f5P1300_to_D2Delta610.gcd to GUPDATE.gcd and drop the file onto the watch, where it should recognize the update, unless for some reason it is already at V21.0 where flashing the backdate first will permit updating to the D2Delta firmware.