While a paid support contract is often not required for this series, you may need to register a free account using a non-public domain email address (business or custom domain) to download the .swi files. How to Update HP 2530-48G Firmware
There are two primary methods to apply the update. HPE generally recommends maintaining two firmware images in the switch memory (Primary and Secondary slots) to allow for easy rollback if an update fails. hp 2530 48g firmware
Enter your switch SKU (e.g., J9775A for the 2530-48G) or simply "2530". While a paid support contract is often not