Hi All, Previously I can use qemu to test these built images, but it does not work now and get the below error messages: Just want to know if there is any command/options changes? Or it does not support now? qemu-system-arm -m 256 -M witherspoon-bmc -nographic -drive file=tmp/deploy/images/witherspoon/obmc-phosphor-image-poon.ubi.mtd,format=r aw,if=mtd qemu-system-arm: Aspeed iBT has no chardev backend U-Boot 2016.07 (Nov 15 2018 - 06:18:37 +0000) Watchdog enabled DRAM: 240 MiB Flash: 32 MiB *** Warning - bad CRC, using default environment In: serial Out: serial Err: serial Net: aspeednic#0 Error: aspeednic#0 address not set. Hit any key to stop autoboot: 0 ubi0: attaching mtd1 ubi0: scanning is finished UBI init error 12 Error, no UBI device/partition selected! Wrong Image Format for bootm command ERROR: can't get kernel image! Thanks, Yong