Find and update the software version on your LG Viper 4G LTE smartphone
it would appear Sprint might have updated the product info a little early; LG might have started shipping with ICS preloaded before pushing OTA?
Hmm you might want too unroot just in case it is the real deal update . i did see they updated the specs too 4.0. i would do a logcat and see what they are trying too push and them you find the truth about your update popup
before you unroot look for the update on you phone somewhere and pull a copy so we can all have it