Flysky FS i6 Mod Upgrade 14 Channel (use CC for English) - YouTube
FlySky fs-i6 series 18650 + module mod by meszoltan - Thingiverse
GitHub - benb0jangles/FlySky-i6-Mod-: A collection of software modifications for the FlySky i6, some useful, some experiment. All use of this repository is experimental and you use at your own risk. But, progress
Mini-HowTo FlySky FS-i6 + Internal Multiprotocol Module - RC Groups
FlySky FS-i6 14CH Firmware Mod + Multi-protocol Module + Battery Mod , US SELLER | eBay