Software serial causing FIFO_FULL requiring flashing to fix

Hi @Programbo,

Some hints:

• replace save(); at the end of upload code with setTimeout("save();",1000);

• switching between release have to include erase flash, check README_flash.txt.

• soft serial is not part of 2v00 release, you have to get a cutting edge build.

• use 4MB build for 4MB boards, check build content