How to unbrick Benjie S5 (no bluetooth)

[BenjieS5unbrick]

I recently purchased and subsequently bricked a Benjie S5 (non bluetooth.)
Fortunately I found a way to unbrick it, so I'm posting the steps here for people who've bricked theirs too.

1. Download and install the firmware updating tool from the Agptek website (included with any firmware).
2. Download either:
   • Stock benjie firmware (A27122_BEIJIElogo_180604.fw): https://app.box.com/s/imcipw2bl4vusbfnii6a5q3drvi0o2d0/file/310112718443
   • Agptek firmware (A_M20_20180701.fw): http://images.agptek.us/Download/AGPTEK_M20(20180910).rar
3. Connect your S5 to the computer via usb.
   
4. Enter the ADFU programming mode: Hold the power and volume down buttons simultaneously and press the reset button (via the pin hole on the side).
5. The "Audio Product Tool" software should now detect your device in ADFU mode. If not:
   • Click the "Mark USB Device" to re-scan for Usb devices
   • Retry step 4.
6. Select the firmware file from step 2, uncheck "FLASH_ERASE", and then press the "DOWN" button to load the firmware onto the device.

Your device should now boot correctly.

I can't take all the credit, I found which firmware to use from a Russian forum.
Enjoy!