Yes, there is a firmware (beta) that I passed the TP-Link, but I have a commitment not to reveal. I do not want to incur unpleasant and possible legal proceedings. Nor in other consumers' guarantees, I did it on my own responsibility.

I write this because it is true, enough time has passed for them to be official released.

I open a ticket from 3 months ago, but the TP-Link don't got me a solution yet....

I tryed with 1.0.0 and 1.0.1

thanks by return,

I tryed the version 1.0.3 but the problem is the same.

When I active the snmp server and comunity public, break the ping and WEB interface....

The hardware version is 1.0

Hey dude, I have not met the problem you mentioned, but I want to know how did you find that there is still traffic passing through?
The problem you described looks like a switch hang problem.
And did you try to run any snmp settings ? Such as snmp walk or something like this, if you just enable it and do not run any snmp activities, I think it will not add much burden to the switch.