On my new Pansat 3500SD, I noticed that b-70 shows up on the receiver's display for a few seconds whenever I flip on the receiver's rear power switch. I've read that the b-70 can indicate some type of error with the firmware, however the receiver seems to be working without any problems. Out of curiosity, I re-installed the latest firmware (which I downloaded directly from Pansat) which I installed when I first received the receiver, but after doing so, I still had the b-70 message appear for a few seconds at power-up. I've also tried re-installing the original factory firmware, but I also get the b-70 message with the original firmware. Any suggestions?