If the transmitter shuts off during the 60-second flashing process, the update will fail, and you will likely brick the device. Use fresh alkaline batteries or a fully charged LiPo transmitter pack.
Before you download any files, you must check your hardware version. This is the most critical step in this guide. If you flash the wrong firmware, you can permanently damage your radio (bricking it). flysky fs-i6s firmware update
However, there is a community-maintained "Alternative" firmware for the standard FS-i6 (non-S) called FlyPlus , but that does work on the touchscreen i6S. Do not attempt to flash FS-i6 (non-S) firmware onto your FS-i6S—you will brick it permanently. If the transmitter shuts off during the 60-second
The FS-i6S uses a generic STM32 microcontroller. the update will fail