If you lack a direct contract, official Aruba/HPE resellers may provide firmware for the devices they sold to you. Firmware Management Methods
Remember:
Provides a Firmware dashboard to view and manage compliance for global switch and AP groups. aruba firmware downloads link
But clicking that without a valid account leads to a login wall. Even with an account, you may see “no entitlements” unless your device’s support contract is active and linked. If you lack a direct contract, official Aruba/HPE