Brocade交换机无法使用新固件启动

SW7840:FID128:admin> firmwareshow -v
Appl    Primary/Secondary Versions 
------------------------------------------
FOS    v8.2.1c
     v8.2.1c
DP     v8.2.1c                  
     v8.2.1c  

Firmware is being downloaded to the switch. This step may take up to 30 minutes.
2023/03/17-08:38:52, [SULB-1001], 105, CHASSIS, WARNING, Brocade7840, Firmwaredownload command has started. (From v8.2.1c To v8.2.2d).
Preparing for firmwaredownload...

SW7840:FID128:admin> firmwareshow -v
Appl    Primary/Secondary Versions 
------------------------------------------
FOS    v8.2.2d
     v8.2.2d
DP     Unknown                  
     v8.2.1c   
           

• 启动期间的串行控制台输出 

BootROM version: 1.0.82 
...

...
2 USB Device(s) found
    scanning bus for storage devices... 1 Storage Device(s) found
setting prt to 2
Hit ESC to stop autoboot:  0 
** Bad partition 2 **
** Bad partition 2 **
WARNING: adjusting available memory to 30000000
Wrong Image Format for bootm command
ERROR: can't get kernel image!