It’s a very long story, but I’ll try to explain in few words (I hope) what I’ve done from last Thursday until yesterday.
As we already know, BH16NS55 SVC Code NS50/NS55 use the latest MediaTek MT1959 chipset and no LG official firmware update exists on the net.
The first device I bought last Thursday came with 1.00 firmware. I dumped it using the devilsclaw’s tool and compared to the 1.01 dump found on this forum. My first idea was to update my unit from 1.00 to 1.01 (now there is also a 1.02 firmware). Comparing both 1.00 and 1.01 devilsclaw’s dumps I’ve found that each dump contains calibration laser data as well as the specific serial number of each unit and so I mapped my info to the 1.01 dump.
Then I’ve tried to use the LG Unlocked flasher but it says that bin file has a checksum mismatch and so it could not flash the device.
Then, I had the idea to use a modified version of Dosflash 1.7 editing the .typ file adding 0x24 as Manufacter ID / Device ID and naming the BH16NS55 as the detected eeprom and after preparing an usb pendrive with pure FreeDOS, I was able to flash the firmware.
Unfortunately I did not know that the devilclaw’s dump cannot be flashed as it is but it need to be modified. In fact, doing this I’ve bricked my BH16NS55. So I’ve bought another BH16NS55 (this one coming with 1.02 firmware) and used DOSFlash for a full dump instead of the devilsclaw’s tool and SURPRISE : it’s perfectly working flashing it with the LG Unlocked tool as well as with DosFlash.
So I erased the eeprom of the bricked device and reflashed (after importing calibration data from the 1.00 dump) the modded firmware 1.02 file. Now the previously bricked device is working like a charm.
I’m sorry for my english and for making some confusion, but I hope you’ll understand what I’ve written.
P.S. The differences between the devilsclaw’s dump and the DOSFlash dump is that first 1024 bytes have to be replaced with the dosflash dump. Doing this will allow to flash the device via LG Unlocked Flasher under Windows as well as via Dosflash.