Boards with 1284p - full swing oscillator setting - solving upload issues?

westfw:

setting fuse to destroy ee data every time chip is reflashed. whats up with that.

irrelevant, since the chip is normally programmed via the bootloader, which doesn't do "chip erase" (and never erases the EEPROM) ?

one mans "irrelevant" is another mans "chasing tail for hours" (wait a minute, maybe that can be fun too... ).