The menu with the option to install an update package is recovery mode. Sounds like you are booting into the stock recovery.
Don't hold your breath waiting for an e-mail from someone telling you how. This is a forum where solutions are shred publicly so that many can benefit. It is not a personal support area.
The answers you need are here in this forum. Take the time to read in more depth.
Never ask before searching!
Current Device: AT&T LG Optimus G, stock, rooted JB
Retired Devices: At&T Galaxy Skyrocket, Dell Venue, Dell Streak, Moto Flipside, Moto Backflip, Samsung Eternity