Release notes were in the zip file:
AR-DV3 Firmware Version 2604B Release
Changes from the Previous Version (2510E)
・Fixed an issue in VFO mode where frequency steps did not increment/decrement by 10 times the step size when using the [F], [UP/DOWN], or [Dial] controls.
・Fixed an issue where Cyber Search would stop on frequencies that had been previously skipped (passed) when Bank Link was enabled.
・Fixed an issue where DMR Color Codes, P25 NAC Codes, NXDN RAN Codes, DCR User Codes, and DCR Whitening Codes were displayed even when DIGI DECODE was disabled.
・Enabled the display of the recording icon even when the T-TC Trunking function (paid option) is in use.
・Corrected the Step Adjust function during search operations.
・Implemented countermeasures to prevent screen display corruption during search operations.
・Fixed an issue where the F-AU setting was not applied in MEM or SCAN modes.
・Fixed an issue regarding Alarm Timer operation when the Config Menu protection feature was enabled.
・Improved the stability and display of the opening screen.
・Corrected issues related to the following control commands: CC, NC, and SD DIR.
End of List
For instructions on how to update the firmware, please refer to page 46 of the Instruction Manual.
AOR, LTD.