5500's were hybrid only because basically they have separate cards for the layer 3 and layer 3 functions . You have very low nvram specs on your cards so probably the best you could do is upgrade the supervisor to last release in the 4.X train (4.5.14, last release) and it doesn't look like you can do anything with the RSM because the ram is so low . Don't know where cisco even archives old 11.X code .
It really depends on how much nvram and flash that you have to deal with on both the supervisor and rsm as to what you can run. If you have 64 meg on the supervisor and enough room in bootflash or external flash then you can run 6.4.19 which is the latest , if you only have 32 meg nram then I think 5.5.21 is the latest and probably last release for this box . On the RSM side them 12.2.32 is the latest and probably last release for the RSM, this is general deployment code.
5500's were hybrid only because basically they have separate cards for the layer 3 and layer 3 functions . You have very low nvram specs on your cards so probably the best you could do is upgrade the supervisor to last release in the 4.X train (4.5.14, last release) and it doesn't look like you can do anything with the RSM because the ram is so low . Don't know where cisco even archives old 11.X code .
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