kernel upgrade in RHAS21

[Agi Subagio]

I'm using RHAS21 with kernel-2.4.9-e.3.
I have kernel-2.4.9-3.25.src.rpm and I want to upgrade my kernel with that
version.
I rebuild the src.rpm and get:

-rw-r--r--    1 root     root      5865918 Mar 17 14:42
/usr/src/redhat/RPMS/i386/kernel-BOOT-2.4.9-e.25.i386.rpm
-rw-r--r--    1 root     root      1681910 Mar 17 14:42
/usr/src/redhat/RPMS/i386/kernel-doc-2.4.9-e.25.i386.rpm
-rw-r--r--    1 root     root      1187424 Mar 17 14:42
/usr/src/redhat/RPMS/i386/kernel-headers-2.4.9-e.25.i386.rpm
-rw-r--r--    1 root     root     27382324 Mar 17 14:42
/usr/src/redhat/RPMS/i386/kernel-source-2.4.9-e.25.i386.rpm

After I upgrade with command rpm -Uvh kernel* and reboot my server, I found
error in mounting filesystem in read-write mode. And my bcm5700 module won't
work anymore.

How to upgrade RHAS21 kernel from the src.rpm package?
Can I get kernel-2.4.9-e.25.i386.rpm after rebuild from src.rpm?

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