I'm managing some AMT-enabled workstations. They were bundled with AMT 3.0 - can I upgrade their software to the newest 5.0 version or is it constrained by my hardware?
The second question is - can I upgrade the BIOS firmware remotely using AMT features? I see something regarding this in SDK, but it's not clear to me - what upgrade does it support - full BIOS firmware, or only AMT part?
Yes, you have to upgrade your hardware to 5.0 to start using 5.0 features.
Firmware upgrade comes from OEM. Once you get it from the OEM, you can use the WebUI to remotely upgrade the firmware.