wifi can not connect if a previous one is set

[valerio-vaccaro]

Looks like if you have a wifi set on a board, this is no more available and you want change wifi you can not save the information about the new wifi. a reset of credential solve the issue (not every board has a credential reset, maybe updating website needs an erase-flash command)

[BitMaker-hub]

Alright, I totally agree. I'll check how to add it

[drego85]

Bye, I'm supplementing the PR to point out that even a change of pool is not saved correctly. So now to change the pool, after saving the first configuration, you must first reset the board.