[Question/Help] Rooting Android 9 on QNX Hypervisor (SA8155P) - No standard boot.img/Ramdisk

## Device Information **Device:** WM-MOTOR W6 PRO (SA8155P) **Android version:** 9 **Magisk version name:** just for help **Magisk version code:** just for help ## Problem Description Hello Magisk contributors and community members, I am writing to ask for your guidance regarding rooting my car head unit. Since the manufacturer of my vehicle has gone bankrupt, there is absolutely no official support or documentation available. Furthermore, due to the low sales volume of this specific model, community resources are non-existent. I have been struggling to find a solution and am turning to this community as a last resort. ## Environment Details **System Architecture:** QNX 7.0 Hypervisor virtualizing Android 9 **Chipset:** Qualcomm Snapdragon SA8155P **Architecture:** aarch64 (arm64) I am familiar with Linux, but this specific QNX + Android virtualization architecture is new to me. With the help of some analysis tools, I have gathered the following information (please correct me if my assumptions are inaccurate): ### Key Findings 1. **No Standard Boot Image:** There is no traditional `boot.img` or `ramdisk` structure that I can find. 2. **Mixed Image:** I located `linux-la.img` in `/vm/images`. This appears to be a hybrid Linux/Android boot image rather than a standard Android boot image. 3. **Flashing Method:** The firmware update mechanism seems to rely on a QNX utility called `yfupdate`. It appears to flash the `.img` files directly to the block devices using `dd`, rather than a standard Android OTA update. 4. **SUID Attempt Failed:** I attempted to modify the `system.img` (converted from Android Sparse to RAW). I changed `build.prop` and set permissions for `sh` and `bash` to `6755`. While my shell prompt changed to `#`, this is not true root. I still cannot access the `/data` directory, `adb root` is ineffective (likely a stripped `adbd`), and I remain a shell user. 5. **Partial Privilege:** Some vendor services run as root during startup. I can leverage specific vendor shell scripts to execute commands as root, but this is cumbersome. I have not successfully remounted the system partition as read-write (attempts by the shell user or the SUID-elevated user failed, possibly due to missing `fstab` or mount namespace issues). ## Request for Assistance Since standard methods seem impossible, I am looking into Magisk. However, I understand Magisk typically requires a standard boot image. **My situation:** - Automatic patching likely won't work in this environment - I am willing to manually modify the ext4 image files and flash them back to the device - I have direct access to modify system images **Specific questions:** 1. Could anyone guide me on what specific files or configurations I need to modify within the system image to integrate Magisk in this environment? 2. Are there any manual installation methods that could work for this non-standard architecture? 3. Would KernelSU be a better alternative for this type of system without ramdisk? Any advice or pointers would be greatly appreciated. Thank you for your time and for your great work on Magisk. ## Additional Information **Current limitations:** - Cannot provide standard `boot.img` as it doesn't exist in traditional format - Limited ability to generate certain logs due to the nature of the system - Standard recovery methods may not be applicable **Willing to provide:** - Contents of `/vm/images` directory - Details about the `linux-la.img` structure - Information about the flashing process - Any other relevant system information Please let me know what specific information would be most helpful for troubleshooting this unique environment.