Jarne Firmware Update

Tharelia says:

Further update for Jarne users: April 6 evening build will now automatically migrate your user dictionary from on-chip flash to external flash, and update to the latest dictionary storage version at the same time.

This has several advantages:

* The external flash is rated for 100k writes, instead of 10k writes.

* The external flash is much larger. The user dictionary on the Jarne has expanded to 1MB instead of 256kb (compare with 512kb on pico boards)

You can see it's worked as you'll be on version 3 and have larger hash and data block usages available after.