I have an 05 LR3 that fell victim to the apparently common issue of the screen appearing and saying 'HLDF BOOTLOADER CAN' and the radio only working for 45 seconds before shutting off. I took it to my dealer which I forced to try to update it, they charged me 200 dollars, and it still didn't work, they said I needed a new head unit and quoted me at !!!!EIGHT THOUSAND DOLLARS!!! for the part and installing it, and honestly I'd rather get a custom unit, which several audio stores have told me is impossible because I have a Harmon Kardon sound system, what does this mean? I cannot be without a radio, what should I do?