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Updated Troubleshooting (markdown)

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Troubleshooting.md

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| No splash screen / No time & date / Touchscreen does not work / Status bar icon disappeared / Backlight timeout abnormal / Encoder dial abnormal | Check [settings](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Settings). | | No splash screen / No time & date / Touchscreen does not work / Status bar icon disappeared / Backlight timeout abnormal / Encoder dial abnormal | Check [settings](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Settings). |
| It says xxx missing / can't find xxx / xxx read error / xxx is outdated or you can't see xxx. | Make sure sdcard contents matches your [firmware version](https://github.com/portapack-mayhem/mayhem-firmware/releases). | | It says xxx missing / can't find xxx / xxx read error / xxx is outdated or you can't see xxx. | Make sure sdcard contents matches your [firmware version](https://github.com/portapack-mayhem/mayhem-firmware/releases). |
| Apps are missing or greyed out after upgrading. | Make sure [sdcard contents](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Update-firmware#microsd-card-files) matches your [firmware version](https://github.com/portapack-mayhem/mayhem-firmware/releases), particularly the external APPS folder, and make sure you [correctly put the sdcard contents](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Update-firmware#microsd-card-files). | | Apps are missing or greyed out after upgrading. | Make sure [sdcard contents](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Update-firmware#microsd-card-files) matches your [firmware version](https://github.com/portapack-mayhem/mayhem-firmware/releases), particularly the external APPS folder, and make sure you [correctly put the sdcard contents](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Update-firmware#microsd-card-files). |
| Unexpected spike on my waterfall / IQ / spectrum. | It's either a [DC offset](https://hackrf.readthedocs.io/en/latest/faq.html#what-is-the-big-spike-in-the-center-of-my-received-spectrum) or noise from power. For reducing the noise, try using the internal battery. For DC offset, there's nothing you can do. | | Unexpected spike on my waterfall / IQ / spectrum. | It's either a [DC offset](https://hackrf.readthedocs.io/en/latest/faq.html#what-is-the-big-spike-in-the-center-of-my-received-spectrum) or noise from power. For reducing the noise, try using the internal battery. For DC offset, there's nothing you can do, however it’s normal on SDR. |
| My computer can't see my HackRF no matter what I do | Try at least 5 different cables. If you are on Windows, try to install [Zadig](https://zadig.akeo.ie/), if not working, try on a Linux machine (exclude Ubuntu) | | My computer can't see my HackRF no matter what I do | Try at least 5 different cables. If you are on Windows, try to install [Zadig](https://zadig.akeo.ie/), if not working, try on a Linux machine (exclude Ubuntu) |
| My sound board app can't see the files i putted in, but my fileman app can | folow [Soundboard](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Soundboard) to make correct file | | My sound board app can't see the files i putted in, but my fileman app can | folow [Soundboard](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Soundboard) to make correct file |
| Something else | Check more _Troubleshooting_ topics on the sidebar | | Something else | Check more _Troubleshooting_ topics on the sidebar |