[Q] Cannot upgrade droid dna ota topic

Hi All,
i have been at this a few weeks , so finally posting a thread.

i came across what appears to be a pre-release device (new in box) and want to get it updated ( it had a pre-release OS loaded - version 0.68ish )
i managed to force an update to 1.15 with the RUU image .
the device now works fine, but it will not look for OTA updates. When i manually try to check, it flashes briefly it's looking and then nothing happens.
i have tried reloading the RUU and hard resets to no avail

i tried loading the 3.06 RUU out there, but the RUU fails as it is apparently incompatible with a straight upgrade from 1.15 and i cannot find a 2.04 or 2.06 RUU anywhere to be able to stair step the upgrades up the ladder.

i would like to get this device upgraded to the newest os version. not exactly sure how to do it. ( not sure if i have to root, then upgrade to a certain point then unroot or what. ) i would prefer to end up with a non-rooted device running the most current factory version

i DO NOT have a Sim card installed, (but cant believe that would be an issue- then again its verizon so i guess i actually wouldn't be surprised )

here is the Boot screen info;
***Locked***
MONARUDO PVT SHP S-OFF
CID-VZW-001
HBOOT - 1.33.0001
RADIO - 1.00.00.1023_3
OPENDSP-V4.120.240.0920
eMMC - BOOT
oct 23 2012, 21:34:05

(kind of wondering if the S-OFF statement above is affecting an OTA in anyway)

here is some of the Software info from the settings screen ;

Android version
4.1.1
Htc sense version
4+
Software #
1.15.605.4 710RD
hct sdk
4.63
htc extensoion
htc extension_sense45_1
More
Kernel version
3.4.10-g4d47dce
root@ABM013#1
SMP PREEMPT

Build number
1.15.605.4 CL123160 release-keys


ANY THOUGHTS ?!
thanks ahead of time for any assistance!!!