[c-nsp] boot sytem issue

[Alex Wa]

helo guys,
 
We ran into a problem with a 3570 switch. we are trying to update IOS, keeping the current as second option , it accepts both boot system commands but doesn't update running-config and overwrites the existing entry in bootvar. here is the command output ...
 
 
Router(config)#boot system flash:c3750-ipbasek9-mz.122-44.SE2.bin                       
Router(config)#
Router#sh boot
BOOT path-list      : flash:c3750-ipbasek9-mz.122-44.SE2.bin
Config file         : flash:/config.text
Private Config file : flash:/private-config.text
Enable Break        : no
Manual Boot         : no
HELPER path-list    : 
Auto upgrade        : yes

Router(config)#boot system flash:c3750-ipbase-mz.122-25.SEB4/c3750-ipbase-mz.122-25.SEB4.bin
Router#sh boot  
BOOT path-list      : flash:c3750-ipbase-mz.122-25.SEB4/c3750-ipbase-mz.122-25.SEB4.bin
Config file         : flash:/config.text
Private Config file : flash:/private-config.text
Enable Break        : no
Manual Boot         : no
HELPER path-list    : 
Auto upgrade        : yes
 
any hint or suggestion?
 
thanks in advance
Alejandro wainshtok