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Revert 61f04f346d9c1e336d1dea7aae0860a78744b638...2a1355978f01fe27c0ea4a6bf08810898c52c062 on Troubleshooting
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| Problem | Solution |
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| Problem | Solution |
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| -------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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|----------------------------------------------------|--------------------------------------------------------------------------------------------------------------|
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| Does not boot / white screen / black screen | Check [Won't boot](Won't-boot) and [[Config Menu](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Troubleshooting/Config-Menu)](Config-Menu). |
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| Does not boot / white screen / black screen | Check [Won't boot](Won't-boot) and [Config Menu](Config-Menu). |
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| Crash / Guru Meditation. | Try [[Full reset](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Troubleshooting/Completely-reset)](Completely-reset). If still does not work, try [[Updating the Xilinx CPLD on hackrf board](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Troubleshooting/Updating-the-Xilinx-CPLD-on-hackrf-board)](Updating-the-Xilinx-CPLD-on-hackrf-board). If nothing works, [[report an issue on GitHub](https://github.com/portapack-mayhem/mayhem-firmware/issues/new/choose)](https://github.com/portapack-mayhem/mayhem-firmware/issues/new/choose). |
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| Crash / Guru Meditation. | Try [Full reset](Completely-reset). If still does not work, try [Updating the Xilinx CPLD on hackrf board](Updating-the-Xilinx-CPLD-on-hackrf-board). If nothing works, [report an issue on GitHub](https://github.com/portapack-mayhem/mayhem-firmware/issues/new/choose). |
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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)](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Settings). |
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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). |
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| It says xxx missing / can't find xxx / xxx read error / xxx is outdated / xxx empty or you can't see xxx. | Make sure sdcard contents matches your [[firmware version](https://github.com/portapack-mayhem/mayhem-firmware/releases)](https://github.com/portapack-mayhem/mayhem-firmware/releases). |
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| It says xxx missing / can't find xxx / xxx read error / xxx is outdated / xxx empty or you can't see xxx. | Make sure sdcard contents matches your [firmware version](https://github.com/portapack-mayhem/mayhem-firmware/releases). |
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| 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)](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)](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)](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Update-firmware#microsd-card-files). |
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| 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). |
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| 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)](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. |
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| 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. |
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| My computer can't see my HackRF | Try at least 5 different cables. If you are on Windows, try to install drivers in release package. Also try your luck with [[Zadig](https://zadig.akeo.ie/)](https://zadig.akeo.ie/). If not working, try on a Linux machine (exclude Ubuntu) |
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| My computer can't see my HackRF | Try at least 5 different cables. If you are on Windows, try to install drivers in release package. Also try your luck with [Zadig](https://zadig.akeo.ie/). If not working, try on a Linux machine (exclude Ubuntu) |
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| 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)](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Soundboard) to make correct file |
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| 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 |
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| Screen went black when transmit / replay | Check [[Stealth Mode](https://github.com/portapack-mayhem/mayhem-firmware/wiki/stealth-mode)](https://github.com/portapack-mayhem/mayhem-firmware/wiki/stealth-mode) |
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| Screen went black when transmit / replay |Check [Stealth Mode](https://github.com/portapack-mayhem/mayhem-firmware/wiki/stealth-mode) |
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| Fail / freeze when recording | Make sure your sdcard is FAT32 format, and make sure it’s a branded one with acceptable quality |
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| Fail / freeze when recording| Make sure your sdcard is FAT32 format, and make sure it’s a branded one with acceptable quality |
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| My GPS-Simulation Doesn't work. / My bluetooth doesn't work. | Most modern devices use cellular to verify GPS. Make sure your devicce is vuln to gps-sim.<br />Go to Settings - Radio, and make sure the "Reference Source" says "External". If not, then check the last checkbox and see if it's getting better.<br /> |
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| Something else | Check more _Troubleshooting_ topics on the sidebar |
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| Something else | Check more *Troubleshooting* topics on the sidebar |
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