Receiving the 'Unable to download bootctl' error during a Magisk installation on your Fairphone 5 after an OTA update can be frustrating. This issue typically arises when Magisk faces difficulties accessing or downloading the necessary bootctl component.

Here's a step-by-step guide to help you troubleshoot the problem:

**1. Verify your Magisk and Android versions:** Ensure that you're using a compatible version of Magisk for your Fairphone 5 and Android 13 build. Check the Magisk website or the official documentation for the latest stable releases.

**2. Internet Connectivity:** Confirm that your device has a stable internet connection. A network issue can prevent Magisk from downloading bootctl.

**3. Re-run the Installation:** Sometimes, a simple retry can resolve the issue. Close Magisk, restart your phone, and try the 'Install to inactive slot' option again.

**4. Factory Reset (Last Resort):** If the problem persists, consider a factory reset as a last resort. Before doing so, back up your important data.

**Provide Additional Information:** For more specific assistance, please provide the following details:

* Exact OTA version installed
* Any changes you made to system files or settings before the error started
* Logs from Magisk, including the error message and any stack traces

Remember to proceed cautiously with any system modifications and always back up your data before making significant changes to your device.

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