: Upgrading an early "A" unit (Part No. 1T0 035 680 A) to 1100 allows it to function as a newer "B" unit. New Media Support : Introduces support for Bluetooth Audio streaming and AV output. User Interface Updates
"Newer firmware always means better." Truth: For the RNS 510, newer (527x or 538x) adds support for voice control and 64GB SDXC but introduces memory leaks. Version 1100 is lighter and more robust. rns 510 firmware 1100 factory high quality
Before Firmware 1100, "Revision A" units felt dated. They lacked features like a volume bar at the bottom of the screen or the ability to remember your place in a directory after exiting it. : Upgrading an early "A" unit (Part No