Firmware update

Newest firmware:

https://etrelchargingsolutions.atlassian.net/wiki/spaces/Home/pages/2836168744

Older firmware:

• 1.6

• 1.7

• 1.7.1

• 1.8

• 1.9.2

• 1.10.0

• 1.11.3

• 1.11.4

• 1.12.3

• 1.12.5

• 1.12.6

• 1.13.1

• 1.13.2

• 1.13.3

• 1.13.4 release candidate only

• 1.13.5 RC release candidate

• 1.13.6

• 1.13.8

• 1.13.9