This guide provides troubleshooting steps for users experiencing issues rooting their POCO F7 (onyx) device with Magisk. We'll walk through common problems and potential solutions, including patching the boot.img and vendor_boot.img files.

**Device Information:**
* Device Model: POCO F7 (onyx)
* Android Version: 15 (Kernel: 6.6.56)
* Magisk Version: 30.1

**Problem:** Despite successful patching and flashing, the device remains unrooted, and the 'su' binary is absent in /system/bin.

**Steps Taken:**
1. **Patching boot.img:** The user attempted to patch the stock boot.img using the Magisk app, which reported success. However, the device did not show root access.
2. **Manually patching cpio file in vendor_boot.img:** Following instructions from #8835, the user manually patched the cpio file within the vendor_boot.img file and reflashed it. Still, root access wasn't achieved.
3. **Analyzing boot.img file:** Upon unpacking the boot.img, the user found only the kernel executable, indicating a potential issue with the patching process.

**Troubleshooting:**
* **Verify Device Compatibility:** Double-check if the POCO F7 (onyx) model is officially supported by Magisk. Some devices might require specific patching techniques.
* **Magisk Installation Log Analysis:** Review the provided Magisk Install Log (https://github.com/user-attachments/files/21142433/magisk_install_log_2025-07-09T13.15.17.log) for error messages or warnings that might shed light on the issue.
* **Double-Check Patching Process:** Scrutinize the steps followed for patching both boot.img and vendor_boot.img. Ensure the correct tools and methods are used, especially when dealing with specific device configurations.
* **Alternative Patching Method:** Consider using alternative patching tools or methods, as specific file structures might require different approaches.

**Additional Information:**
* **Boot Images:** The user has provided the patched and unpatched boot images for further analysis (https://github.com/user-attachments/files/....)

Please share relevant log files and further details for targeted assistance.

This article is created by nurl and is licensed under the Creative Commons Attribution 4.0 International License.
All articles on this site, unless otherwise specified as reprints or sources, are either original works or translations by this site. Please ensure proper attribution before reprinting.