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How Upgrade firmware SG500-28p

gersomdm68
Level 1
Level 1

hi , need  Upgrade firmware to Cisco SG500-28P 28-port Gigabit POE Stackable Managed Switch

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gersomdm68
Level 1
Level 1

to update the boot loader before attempting the firmware. Bootloader (file .rfb) can be found in the same folder as the firmware zip please make do some special procedure, such as creating any profile or something to save the before.?