Icom released new IC-R8600 "v1.34 firmware" on April 19, 2019 :
USA 02 Version Link Here
Changes in v1.34 firmware
• The MAC Address item is added in the Set mode.
• The File Split function that can record the received audio, depending on the squelch open or closed status, is improved.
• The Noise Reduction function is improved.
• Fixed an issue where the RX audio level may change when the bass level is increased.
USA 02 Version Link Here
Changes in v1.34 firmware
• The MAC Address item is added in the Set mode.
• The File Split function that can record the received audio, depending on the squelch open or closed status, is improved.
• The Noise Reduction function is improved.
• Fixed an issue where the RX audio level may change when the bass level is increased.