I recently updated my jetpack now It will not power back on. please help
What Jetpack? Do the usual things, remove and reinstall the SIM Card and battery.Call Verizon Wireless Customer Service (800) 922-0204.
It sounds like you "bricked" your Jetpack. Contact VZW support and get it replaced under the warranty. Even if the device isn't covered many times VZW will still send you a replacement for a bad firmware update.