Getting Started with SX-PokeGo
Once jailbroken, open Cydia and select "Complete Upgrade".
Re-open Cydia and add the following repos as sources:
Re-open Cydia and install the "KernByPass (Unofficial)" tweak and "Sx-PokeGo" or "Sx-PokeGo Beta" if you have an active VIP membership.
Download Pokemon Go from the App Store.
Open Settings, scroll to KernByPass and enable "kernbypassed". Tap "Enable KernByPass" followed by "Yes".
Check Pokemon Go to enable KernByPass for it.
Under the Settings tab, type in the ID provided by the Pokemon Go app in the "Unique ID" field.