Hi all,

Happy 2003 for a start ...

We've bought some (A)T89C51SND1B with USB bootloader inside. After redesigning the specs : UsART bootloader would be much easier in the field than the USB version.

Therefor we like to overwrite te bootsector of 4k with the correct UART version.

Looking for a low-cost solution cause we need this not that often.

We have used a dataman48 programmer in house,but there is no adapter (YET) available for TQFP 80.

I'm looking for a practical solution, not a design solution!

Best regards