I have this 813 that I have been trying to unsuccessfully upgrade

I tried delete + squeeze but the image stays on flash.
Router#sh flash
Directory of flash:/
0 ---- 49096 Nov 08 2000 03:37:53 TinyROM-1.4(1)
60 -r-x 6320928 Jun 07 2003 11:43:21 c800-osy6-mw.12.3-1a.bin
8388608 bytes total (1966080 bytes free)
Router#delete flash:c800-osy6-mw.12.3-1a.bin
Delete filename [c800-osy6-mw.12.3-1a.bin]?
Delete flash:c800-osy6-mw.12.3-1a.bin? [confirm]
Router#sh flash
Directory of flash:/
0 ---- 49096 Nov 08 2000 03:37:53 TinyROM-1.4(1)
60 -r-x 6320928 Jun 07 2003 11:43:21 [c800-osy6-mw.12.3-1a.bin]
8388608 bytes total (1966080 bytes free)
Router#squeeze flash:
All deleted files will be removed. Continue? [confirm]
Squeeze operation may take a while. Continue? [confirm]
|>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>|
Squeeze of flash complete
Router#sh flash
Directory of flash:/
0 ---- 49096 Nov 08 2000 03:37:53 TinyROM-1.4(1)
60 -r-x 6320928 Jun 07 2003 11:43:21 [c800-osy6-mw.12.3-1a.bin]
8388608 bytes total (1966080 bytes free)
Then I tried erase flash but the file is still there

Router#sh flash
Directory of flash:/
0 ---- 49096 Nov 08 2000 03:37:53 TinyROM-1.4(1)
60 -r-x 6320928 Jun 07 2003 11:43:21 c800-osy6-mw.12.3-1a.bin
8388608 bytes total (1966080 bytes free)
Router#erase flash
Erasing the flash filesystem will remove all files! Continue? [confirm]
|>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>|
Erase of flash: complete
Router#sh flash
Directory of flash:/
0 ---- 49096 Nov 08 2000 03:37:53 TinyROM-1.4(1)
60 -r-x 6320928 Jun 07 2003 11:43:21 [c800-osy6-mw.12.3-1a.bin]
8388608 bytes total (1966080 bytes free)
Router#squeeze flash
All deleted files will be removed. Continue? [confirm]
Squeeze operation may take a while. Continue? [confirm]
|>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>|
Squeeze of flash complete
Router#sh flash
Directory of flash:/
0 ---- 49096 Nov 08 2000 03:37:53 TinyROM-1.4(1)
60 -r-x 6320928 Jun 07 2003 11:43:21 [c800-osy6-mw.12.3-1a.bin]
8388608 bytes total (1966080 bytes free)
This bastard is driving me nuts

Any ideas how to get rid of it?