What about ClockworkMod recovery?
I suspect meticone's version of FRG22D is pretty much equivalent to p3droid's.I'm running this Rom and it's stopped the update messages.
p3droid:The only mod besides su, busybox and the deodexed apps is that I added my handle to the about phone section "FRG22 - metiCkOne".
In any case, I installed the second on top of my FRG22 (only wiped the cache, not data) and it eliminated the update message.The newest Verizon FRG22D has been deodexed, busyboxed, and given root.
Good point. Was moot for me, as I swapped in a better kernel after moving up to FRG22D. Boy those notifications were annoying.P3Droid's version has a dev kernel or something that Verizon keeps seeing as incorrect and pushes the OTA notice to. Meticone's version has the stock kernel and gets no pushes.