In this video I explain the exact steps on how to update the Icom IC-705 firmware including formatting and setting up an SD card. The firmware updated in this video is version 1.11.
To find firmware updates for the IC-705 go to the Icom Japan website.
Icom Firmware Updates / Software Downloads
https://www.icomjapan.com/support
1.12 Firmware (18/09/2020)
https://www.icomjapan.com/support/firmware_driver/3119