OTA not possible when using SSL

[despian]

There were already many issues raised for this problem: #457, #426, #331, #291, #237 ... and probably some others I missed. They have all been closed as stale ... yet the issue remains.

There was a PR which would have fixed this, which was never reviewed or merged and was then closed for being stale ... #236

Can we just revive #236 and merge it? I would also be willing to submit a new PR, but would it ever be reviewed or merged?

(For searchability) You will see errors like:

... Firmware is not accessible on the server at ... or 403 Forbidden