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Beginner

Unable to upload new IOS file to 3850 switch

I am not able to upload a new IOS file to a 3850 switch currently on 16.6.5. 

 

TFTP transfer fails with: 

%Error opening tftp://10.x.x.x/cat3k_caa-universalk9.16.06.06.SPA.bin (Timed out)

 

Copying from USB fails: 

%Error reading usbflash0:/cisco/cat3k_caa-universalk9.16.06.06.SPA.bin (I/O error)

 

There is more than enough space on the flash. I tried different IOS version files with no success. Also tried different USB sticks and 2 different TFTP servers. 

 

15 REPLIES 15
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Some months later: it was a bug affecting IOS-XE for 3850 or ISR routers on 16.6.6 only.
I did update with FTP and managed to skip this bug.
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