My system is imx28 with nand booting. With porting Linux-2.6.35, an update_ivt.sb can be made and download by mfgtool to format the nand chip for UBIFS including make ubi volume etc. When moving to Linux-3.9.7, for fast map of UBI, the previous tool doesn't work anymore because lack of dtb file. Please let me know if there is a way to make a new update_ivt.sb supporting dtb config, so that we can still use MfgTool in volume production. Thanks!