Is there a way to unpack U-boot image?
I have this tf_recovery.img that’s supposedly a U-Boot image, but I can’t unpack it either using dumpimage or other techniques because mkimage -l doesn’t provide me with enough information. Multiple versions of u-boot, including the latest (v2019.04-rc1) built from source.
How to unpack U-boot firmware stack reverse engineering stack?
Try dumping the byte stream starting at the signature FD 37 7A 58 5A 00, then extract it using 7z or xz. Note that it is only a Linux kernel image, it probably does not contain the full filesystem image (at most a minimal ramdisk).
Is there a BBM command for U-Boot?
It was kinda slow but did achieve the goal. Your U-Boot does not seem to have the bbm command but fload – load binary file from a filesystem image for system boot and sf – SPI flash sub-system sounds promising, I’d suggest exploring them.
Can a U-boot console dump data over serial?
We can use the U-boot console to dump the data out over serial, and rebuild it into a binary file! You want to connect up a serial adapter, start your terminal emulator (minicom) and watch the screen as the device boots. It’s highly likely you will see a message:
Is there a way to program firmware from U-Boot?
Digi recommends you program your images into the internal eMMC using the firmware update mechanism. You can also use U-Boot to program your device. If your device is not booting U-Boot see Recover your device . You can program the firmware from either TFTP or microSD: U-Boot bootloader allows you to update the firmware of your device over Ethernet.
How to unpack and analyse IP camera firmware?
I’m trying to unpack (extract) and analyse the firmware of an IP Camera (Xiaomi mjsxj02cm). I have this tf_recovery.img that’s supposedly a U-Boot image, but I can’t unpack it either using dumpimage or other techniques because mkimage -l doesn’t provide me with enough information.