We have several Cisco 2960 switches and we have a problem after upgrading IOS.
We had : c2960-lanbasek9-mz.122-46.SE
No problem at all transfering IOS files with tftp
Now : c2960-lanbasek9-mz.122-46.SE
With this IOS, every transfer crash. Only a few bytes are transfering then everything stop. On the TFTP server we see the connection disrapering (so the switch stop downloading).
If I restart the switch in the original IOS, everything works.
Other question, can you tell me what's the purpose of the file named "multiple-fs" in the flash.
is the same tftp server used in the lab as in the prod environment?
I would try to use a different tftp server (i.e. like your workstation) just to rule out the server.