Most custom ROMs these days have their own built-in recovery. As opposed to TWRP, these recoveries do not come with the option to install/flash any file. Instead, you will have to perform an ADB sideload. If you’re rooting your custom ROM, you simply have to sideload the Magisk ZIP.
Since Magisk hasn’t been signed by the ROM developer officially, you may get the Signature Verification Failed error. With that, you will also get the option to proceed ahead and install the file or skip it. However, this option is not present across all custom recoveries, some directly refuse the flash the file.
If you’re getting a Signature Verification Failed error when sideloading Magisk, it is still possible to root your device. If you’re looking to overcome this error, then this guide is perfect for you. In this guide, you will get to know how to fix Signature Verification Failed when sideloading Magisk.
Steps to fix Signature Verification Failed when sideloading Magisk
- To start off, you will need to download TWRP Recovery for your smartphone
- Then, you should download the latest Magisk APK
- Now, download and extract Android SDK Platform Tools
- Place the twrp.img file in the platform-tools folder
- After that, enable USB Debugging and connect your smartphone to your PC
- Then, launch CMD inside this folder and then execute the below command –
adb reboot bootloader
- Your device will be booted to Fastboot mode, after which you’ll need to type the following command –
fastboot boot twrp.img
- Your device will get booted to TWRP
- Head over to Install, choose the Magisk APK, and then flash it
- Once it is done, head over to Reboot before selecting System
- Your device will get booted to the OS
- Install the Magisk APK, launch it, and then tap on “OK” in the additional setup prompt
- Select the “Direct Install” option -> Let Go to flash Magisk
- Once it is done, tap on the “Reboot” option
- Your device will get booted to the rooted OS and the error will be resolved