[Asterisk-Users] ATA 286 downgrade failure

[Vladyslav]

Good day list,
 I have a problem with ATA Handy Tone 286. It has been unsuccessfully
downgraded via HTTP. Seems like during downgrade there was a problem
with connection, because now it's not responding at all. There is no way
to get to it's voice menu via phone (by pressing button on it). The
button is just flashing ...
 Could anyone suggest any way to bring that device back to life.
Thank U in advance.