3750X switch: error on boot up: warning unable to determine image authentication.image is either unsigned or is signed but corrupted

[wholmes]

Hello,

I need to add another switch to our core stack (3750X-24-T-E).

I have to update the IOS on the switch. So I downloaded the image file (c3750e-universalk9-mz.122-58.SE2.bin), from cisco, to match the other switches in the stack.

I got the device to boot to the new image but I get the follow error on boot:

warning unable to determine image authentication.image is either unsigned or is signed but corrupted

I have tried uploaded the file many times verify the file size is correct. I can also verify the md5 manually (verify /md5 c3750e-universalk9-mz.122-58.SE2.bin) and it checks out .

I just get the above message on boot up.

Any ideas? Can I safely use this image?

Thanks

Will

[Leo Laohoo]

Don't ever try using IOS train 12.2(58)SE.  Cisco has stopped developing/improving this version for a specific reason.  

For stability on 3750-series switches, which the 3750X is a part of, use the latest (and final) 12.2(55)SE10.

[Iulian Vaideanu]

Maybe the switch was configured for FIPS mode at some point:

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/15-0_2_se/configuration/guide/3750x_cg/swipaddr.html#marker-1194169

Should be usable, if I understand the last part of that table correctly (it's just a warning)...