When attempting to recover or upgrade the Huawei S7721U switch, the device may display a "verify failed" error message. This typically occurs when the recovery image fails to pass the verification process, preventing the switch from booting or upgrading successfully. The error can be caused by various factors, including:
Mount it (or use unsquashfs ):
Launch your PC's command terminal inside your platform-tools folder and execute the recovery flashing string: fastboot flash recovery RECOVERY.img Use code with caution. Reboot the system cleanly: fastboot reboot Use code with caution. Step 2: The SD Card Force-Update Method (dload Mode)
ro.secure=0 ro.allow.mock.location=1 ro.debuggable=1 persist.sys.usb.config=adb ro.boot.selinux=permissive Use code with caution. Adjusting init.rc Security Handlers huawei s7721u recovery image verify failed repack
Navigate to the /ramdisk/ directory and open default.prop using a plain text editor. Update the variables to explicitly ignore verification checks and enforce permissive rules: properties
To resolve the recovery image verify failed issue, you can try repacking the recovery image. This involves re-creating the recovery image file and re-flashing it onto the device. Here's a step-by-step guide:
Output example:
Use a tool like Minimal ADB and Fastboot to flash the recovery partition image directly using the command prompt: fastboot flash recovery recovery.img Step 5: Utilizing Huawei’s eRecovery or HiSuite
If you are intentionally trying to flash a custom recovery (like TWRP) or a custom ROM, and receiving a "verify failed" error, the bootloader is actively rejecting the modifications.
The GitHub repository huawei-playground provides useful scripts for parsing and modifying Huawei images, including update-extractor.py for handling UPDATE.APP files. When attempting to recover or upgrade the Huawei
If you're planning to use custom recoveries like TWRP, you'll need an unlocked bootloader. Note that this voids your warranty and erases all data:
: Ensure that the output size of the newly built file matches the parameters allocated by the partition map.