Originally Posted by geekmaster
Writing flash images over serial is aided by the fact the YMODEM protocol checksums the packets and retries if missing or damaged bytes. u-boot also has kermit support, but yifanlu says that this is broken, so we should use YMODEM.
One time, on a tiny device, I had to suck a firmware image out over a blinking LED, because that was all that I could control. It took many days.
I just re-thought what I wrote...
People pay "per hour of bench time" when restoring their Kindles, so let us reflash these devices at 9,600.