Giomen
So why do you think the bluetooth firmware is present in fw_all.bin for 37xx? Is it only because you've found BRF6350 string and the firmware version string? Or do you have some other information sources?
Some firmwares are indeed present in fw_all.bin like the PMIC firmware, but I haven't found a bluetooth firmware in fw_all.bin, except the fact that during bluetooth initialization fw_all.bin sends ~11kbytes to bluetooth module, which seems to be too small for a bluetooth firmware.
catymag
I guess he is busy with his daily routine.
UPD:
Also it seems that 0xF5 is a virtual region with contents stored in 0:/.System/RemoteSW/remotesw.gcd
On 14xxTV bluetooth firmware is read from 006B097701.gcd
On 37xx I don't see any firmware updating code yet.