Yaesu FT-991 Software Update and Firmware Version

Yaesu FT-991 Software Update and Version Identification

The latest versions are listed below with the release dates.

• MAIN Software Version 02-05 (08/25/15)
• DSP Software Version 01-04 (07/24/15)
• TFT Software Version 02-01 (07/24/15)

*If you already have MAIN: Ver. 02-05, DSP: Ver. 01-04 and TFT: Ver. 02-01 software versions, it is not necessary to update the FT-991 again.

There are four different Software installations. Each one must be followed carefully. Installing the wrong type software may cause difficulties. Check your radio before installing software to be sure which updates are needed. Please read the FT-991 Firmware Upgrade Manual before proceeding.
If multiple software installations are required the MAIN software should be installed first, as it is the only one that requires a press and hold in the [F(M-LIST)] key while turning the radio back on. This resets the radio and locks in the new software.

Before installing new firmware, please verify your current version firmware with the following procedure:


Press and hold the [POWER] key to turn on the transceiver, while pressing and holding the [A=B] key, and [A/B] key on the transceiver's main panel.
The versions of each firmware will be displayed on the TFT screen.

Download the FT-991 data and [FT-991_Firmware_Update_AUG25.zip] from the following website:

http://www.yaesu.com/indexVS.cfm?cmd=DisplayProducts&ProdCatID=102&encProdID=D24F60F33816ED8BE5568D7E2B5E2131&DivisionID=65&isArchived=0

Please read the FT-991 Firmware Upgrade Manual before proceeding!