I have a problem upgrading my Cisco ASR1002. It is currently running on IOS image asr1000rp1-advipservicesk9.02.03.02.122-33.XNC2.bin. I have already uploaded a new image (asr1000rp1-advipservicesk9.03.02.02.S.151-1.S2.bin) and make the following changes on the router
ASR1002-02#sh run | i boot
boot system flash bootflash:asr1000rp1-advipservicesk9.03.02.02.S.151-1.S2.bin
However, whenever I reboot the router, it still comes up with the previous image (asr1000rp1-advipservicesk9.02.03.02.122-33.XNC2.bin). The router is having 4GB RAM and the reason I want to upgrade the IOS image is that there is a software bug on the current IOS image. Anybody with an idea please?