Gflash updated to version 1.2.2
-Inventory Tweaks 1.58
-Applied energistics2 R2
-Simply Jetpacks 1.5.3
Type in the modpack name (Gflash) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select Gflash from the list on the left. The launcher will handle everything else!