Upgrading code on an RSM

[AidanEnos]

I've got the generic procedure, and it worked on one node but the second one I tried I didn't get the prompt to erase the existing code and the download failed (Bad CRC check, file will not open try reformatting to squeezing).

So I format bootflash:
it formatted and came back fine

copy tftp flash
it uploaded with no errors this time

sho flash
CRAP!!!

Now I have:

RSM-A#show flash
-#- ED --type-- --crc--- -seek-- nlen -length- -----date/time------ name
1 .D unknown 48A2FDD8 45956C 23 4429036 Jan 01 2000 00:09:06 c5rsm-isv-mz.112-12a.P1
2 .. unknown 7C02914A 8204A4 31 3960504 Mar 21 2001 17:49:18 c5rsm-boot-mz.120-10.W5.18a.bin
3 .. unknown 7C02914A BE73DC 31 3960504 Mar 21 2001 17:58:49 c5rsm-boot-mz.120-10.W5.18a.bin

How do I get rid of the other 2 entries? It's obvious the last is the one I want to keep, I tried:

erase flash (command not supported)
squeeze flash (didn't work)

Thanks,