The only reason I installed a boot loader at all was to set the UPDI pin to GPIO...
The new megaTinyCore 2.1.4 allows setting the UPDI pin to GPIO without Optiboot.
Of course,
make sure you have a working HV-UPDI programmer available.
Example of how your board settings would look...
With Optiboot
Non-OptibootHere, don't get confused by the wording "burn bootloader" or "Bootload burn req'd".
This just means that if any changes are made, you need to run "Burn Bootloader" in the Tools menu.
This won't add Optiboot ... it just updates the fuses.
