I just received my NAM RM-428 back from the service center. However, they sent a replacement and it doesn't have the V40 firmware. I've tried all JAF, Phoenix, and NSS and they're all giving me errors. I don't have my WinXP laptop which I used to do anything on the phone. Please help me flash my firmware...thanks. I've also tried changing the product code, still not recognizing new firmware.