Just to inform you that my JVC assistance service was able today to update my old camera (one of the first lot.. not firmware upgradable from JVC's site) to the new one. This because there is a low-level firmware that actually states the CPU model etc.. And he was able (with JVC help) to change this. My camera now can acccept the new Firmware that usually is available only for CPU 1.0.5 and newer
No.. it was done here in Italy.
I posted this just to tell all you out there.. that.. it is possible.
He phoned his "friend" in JVC and got some beta-never-to-be-published version and worked with it. He said that after installing it he had to reconfigure the whole camera. This because.. he explained... these camera are almost all programmable and by software you "could change the camera to be a radio transmitter!". So by installing the high-level firmware he had to adjust the "low-level firmware" (thai is almost the kernel of the machine).
At least.. this is how he explained it to me and how I understood it.
Anyway.. now my camera is a "new JVC HM700" and I can install regular and future updates.
Sorry if i cannot be more precise but I'm not a software programmer.. just a video maker.
Anyway.. this is the guy that did it. Maybe you can get your usual assistance service to contact him.
R.e.i. Engineering Srl
Via Dello Scalo Di Settebagni 37
00138 Roma (RM)