1. Install the LTIB environment to a new directory
2. In the new ltib directory, type this command to configure the build profile
./ltib -m selectype
3, Choose "imx_28" as platform type and "mfg firmware profile" as packages profile
4. Type this command to build updater.sb and updater_ivb.sb
The above steps can also be found in i.MX28_Linux_BSP_UserGuide.pdf.