: Standard Android unpacking tools strip or rewrite crucial structural properties inside the footer of the .img file.
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Wait for the process to complete. If successful, reboot your device directly into recovery to test it:
Select . The device will attempt to download and install the official factory image directly from Huawei servers. huawei s7721u recovery image verify failed repack
Create a folder named dload on a FAT32-formatted SD card and copy the UPDATE.APP file into it.
Create a folder named dload and place the official UPDATE.APP file inside.
dd if=/dev/mtdblock3 of=recovery_stock.img bs=4096 : Standard Android unpacking tools strip or rewrite
binwalk -e recovery.img
: When the device boots, the primary bootloader evaluates the cryptographic signatures of the boot and recovery images. A "repacked" image modifies the underlying kernel or ramdisk binary structure. This breaks the original signature.
: Do not attempt to force-load modified boot kernels without verifying that SELinux and secure boot validation states are adjusted properly. If you share with third parties, their policies apply
# Set network parameters setenv ipaddr 192.168.1.10 setenv serverip 192.168.1.100 setenv netmask 255.255.255.0
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