this is my router 16.09 ios file
4 462502256 Aug 21 2020 08:59:44.0000000000 +00:00 /bootflash/c1100-universalk9_ias.16.09.05.SPA.bin
i need downgrade it to c2951-universalk9-mz.SPA.157-3.M8.bin
i have get this ios from other router flash as ftp transfeer to my pc
on i set it to router 1 to downgrade
the file is is corrupt or is not a valid package.
The problem is that my account is not verified for the ability to download files. Can someone give me a direct download link for
Is it possible to install it on any version of the . routers or are there certain versions