MR1100 cellular unstable after v12.06.11 update

[DocHogan]

Just received a new MR1100 to replace older AT&T locked MR1100, to use with VZW (I am aware that Ch13 is not supported).

Configured and used with firmware as shipped for 4-6 weeks, with no issue. Updated firmware via auto-update to v12.06.11. Now have an oddly intermittent cellular connection. Odd, in that it is regular, TOO regular. Connected/not connected in an approx 1hz cycle, contunuous. 1 second of 'Connected', 1 second of 'Not Connected'. This behavior is observable on the routers internal home page.

Have attempted to revert to v12.05.05, which was stable, but the unit does not allow reverting. Have reset to Factory Defaults, with no change in behavior.

MR1100-100NAS

IMEI 015240000469192

S/N 5K150BN050D0B

[DocHogan]

(of course, I'd be MORE than happy to beta test an unlocked MR5200 😉  As a ong-haul truck driver, I *need* a dependable hotspot that can work throughout the US)