Which tool is used to upgrade the firmware of an IP500 V2 control unit?

IP Office Manager (Option A) is the tool used to upgrade the firmware of the IP500 V2 by uploading new software binaries to the control unit. Option B (SSA) monitors performance, Option C (Voicemail Pro) manages voicemail, and Option D (Web Manager) is for Server Edition, not firmware upgrades on IP500 V2.References: Avaya IP Office Manager Administration Guide.