Make sure you go to the settings page before you upload and select regular JB4 since there is alot of options out there now with the G5 and G5 ISO. It takes about 5 minutes I would say and when its done it will say upload complete.

Find the new firmware you just downloaded and double click it and then click upload. click FILE and UPLOAD FIRMWARE, then click OK, and then it lets you browse to what you want to load. Then go into your car and with your foot off the brake, push the start button twice (a good way I use to check was to turn my headlights on and make sure they come on) Connect your laptop to your computer and connect to the JB4 interface. Download that to your computer and save it so you know where it is. scroll down to right under the big box that tells you what settings do what and you will see a small little hex file. Long story short, a couple days ago I had the time (and energy) to give map 5 a whirl once again. Try map 5 once more, before throwing in the towel.

Go back to stock until I had more performance mods, because stock actually felt more lively than map 1. download the hex file Terry puts on N54tech under JB4 firmware, software ect. At this point, I only had a couple options. Before I had my G5 ISO I remember the 6/10 firmware and the 8/21 is better in my opinion. I would def upload the newest firmware Terry has for the JB4.