Any issues related to uiflow 2.0 can be discussed here.
UiFlow 2.0 website: link
UiFlow 2.0 API Docs(WIP): link
UiFlow 2.0 source code: link
M5burner: download link
Quick look: twitter link
Burning firmware requires a login account (forum account), which will automatically bind the device to the account.
More info wiil add late in here.