Please see the attachments to get the firmware files for Lite Radio 2 SE.
1. Flashing firmware 1.0.2.bin before installing Hall Gimbal. Both Frsky version and ELRS version are needed.
2. BETAFPV released the new firmware 2.0.0.bin for customers who prefer to upgrade their transmitter to ELRS V2.0 version. This firmware supports Hall Gimbal as well.
The file name including SX1280 is the firmware for ELRS version transmitter.
The file name including CC2500 is the firmware for Frsky version transmitter.
Please upgrade your Literadio 3/2 SE to the latest version before replacing Hall Gimbal. For the Litereadio 2 SE without BETAFPV configurator supported sticker (old version Literadio 2 SE) and Literadio 2, upgrading the newest firmware is unavailable, which is not compatible with the hall gimbal and only supports the potentiometer gimbal.