After upgrading the image on a 4404 I have downloaded the 5.2.157 bootloader as described in the release notes (http://www.cisco.com/en/US/products/ps6366/prod_release_notes_list.html) . However after downloading to the 4404, saving and rebooting a "show sysinfo" on the controller shows...

Manufacturer's Name.............................. Cisco Systems Inc.
Product Name..................................... Cisco Controller
Product Version.................................. 6.0.188.0
RTOS Version..................................... 6.0.188.0
Bootloader Version............................... 4.2.61.0
Emergency Image Version.......................... N/A
Build Type....................................... DATA + WPS

System Name...................................... xxxxxxx
System Location.................................. xxxxxxx
System Contact................................... xxxxxx

System ObjectID.................................. 1.3.6.1.4.1.14179.1.1.4.3
IP Address....................................... 10.41.0.3
System Up Time................................... 0 days 0 hrs 1 mins 39 secs
System Timezone Location......................... (GMT) London, Lisbon, Dublin, Edinburgh

Configured Country............................... GB  - United Kingdom
Operating Environment............................ Commercial (0 to 40 C)
Internal Temp Alarm Limits....................... 0 to 65 C
Internal Temperature............................. +35 C

How can I get the bootloader to the correct level?

many thanks for any help,