The procedure for the VL2 was something like:
You will need a USB flash drive. Make sure is freshly format FAT32 that is empty.
Download the file onto the USB flash drive and rename it gromvl1.hex
1. Before proceeding with loading the firmware,
Switch the radio to to FM before turning off and unplugging the Vline module
2. Switch Ignition OFF
3. Unplug the VLINE module from the vehicle
4. Insert the USB flash drive with the renamed file gromvl1.hex into the lower USB port (labeled USB2)
5. Reconnect power to the VLine module. Pay attention to the LED light on the USB drive, It should flash and then turn off. Once LED is off then the firmware is flashed/loaded.
6. After the firmware flashed, simply turn Ignition to ON position, then OFF then ON, wait for 10 seconds after Splash screen off, then press DISC button and see if it displays Vline logo or anything Vline related
Let me know if you have any questions about the process and steps.
(But I can't help with the VL1 firmware file)
The question that I loved from Grom's support staff, "What version are you running?"... Well if it would boot up, I'd tell you, otherwise assume that I was running the latest version.