There are currently no open bugs.

"esptool" versions published in Ubuntu

Hirsute (2.8+dfsg-1): universe/misc
Groovy (2.8+dfsg-1): universe/misc
Focal (2.8+dfsg-1): universe/misc
Bionic (2.1+dfsg1-2): universe/misc
Xenial (0.4.6-1): universe/misc