Updated Troubleshooting (markdown)

Troubleshooting.md

@@ -31,7 +31,7 @@
 | 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 |
 | Screen went black when transmit / replay |Check [Stealth Mode](https://github.com/portapack-mayhem/mayhem-firmware/wiki/stealth-mode) |
 | Fail / freeze when recording / Can't see files even if I correctly put sdcard content| Make sure your sdcard is FAT32 format, and make sure it’s a branded one with acceptable quality |
-| 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 /> |
+| 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" or “portapack”. If not, then check the last checkbox and see if it's getting better.<br /> |
 |Charging is very slow|Check the following things:<br /> - Try at least 5 cables. <br /> - Use a good adapter, for example a 5V1A **branded** adapter<br /> - Don't use computer or laptop or similar thing to charge.|
 |How to turn on/off|One of these may turn on and another may turn off:<br />- Single press the knob<br />- Double press the knob<br />- Long press the knob<br />- Plug in USB cable<br />- Unplug USB cable|
 | Replay app show empty list | You didn't press correct button. Check wiki |
@@ -39,5 +39,6 @@
 |DFU suffix CRC doesn’t match / Cannot open DFU device| 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) |
 |Screen backlight never turned off automatically even I correctly set the timeout count|Auto set threshold, follow this: https://github.com/portapack-mayhem/mayhem-firmware/wiki/Settings#touchscreen-threshold |
 |Issue that related to dial/knob/encoder|Go to setting, try all the dial sensitivity and rate multiplier|
+|”FLASH ERR” on my screen|It means you didn’t correct flash the firmware, for example you unplugged your device when it’s still flashing the firmware. If you are sure you did all thing correct but it still says that, then your SPI flash on your hacked board maybe broken.|
 | Something else | Check more _Troubleshooting_ topics on the sidebar |