Firmware Download

This is the first release.

The CS-905 programming software used with this firmware can be downloaded here.

• To update the firmware
• 1. Download and unzip the firmware data (for example, 905E103.dat) and copy it into the “IC-905” folder that is on your SD card.
• 2. Insert the SD card with the firmware data into the transceiver. 
• 3. Update the firmware.
• 3-1. Display the SD CARD screen in the Menu. 
• 3-2. Touch “Firmware Update” on the SD CARD screen to open the FIRMWARE UPDATE screen.
• 3-3. Touch [▼] to scroll to the end of the screen to read all the precautions, after you read and agree with all the precautions, touch [YES]. 
• 3-4. The confirmation dialog recommends making a backup of the settings and memories, touch [YES]. 
• We recommend that you make a backup of them in this step, because all the settings and memories may be reset after updating the firmware.
• 3-5. After the backup file is made, and the firmware selection screen is displayed, touch the firmware update data (for example, 905E103). 
• 3-6. Please carefully read all the precautions, and when you want to execute it, touch [Yes] for 1 second to start the firmware update.
• 3-7. When the update is completed, "Firmware updating has completed.” is displayed, and the transceiver will automatically restart.
• If the setting data needs to be converted, it may take some time to restart. 
• 4. If the settings and memories have been reset, load the settings and memories that have been backed up onto the SD card.
• 4-1. Display the SD CARD screen in the Menu.
• 4-2. Touch “Load Setting” on the SD CARD screen to open the LOAD SETTING screen. 
• 4-3. Touch the file name of the saved file. 
• 4-4. Touch “ALL,” and then the dialog “Keep ‘SKIP’ settings in the Repeater List?” is displayed, touch [YES].
• 4-5. The dialog "Load file? The new “REF Adjust” setting will be saved.” is displayed, touch [Yes].
• 4-6. After the loading ends, “COMPLETED! Restart the IC-905.” is displayed, restart the transceiver. 

• After updating the firmware, the Version Information in the OTHERS Set will be as follows.
• Main CPU: 1.03
• Main DSP Program: 1.02
• Main DSP Data: 1.00
• Main FPGA: 1.01
• RF CPU: 1.02
• RF Sub CPU: 1.01
• RF DSP: 1.01
• RF FPGA: 1.02
• RF DV DSP: 1.00