For routine upgrades of the DSDX5’s firmware, you can use an OTA zip file to update your device.
This will maintain your settings and installed applications.
If your device isn’t working properly and you need to fully reflash your device, you can do so using the USB-USB method described here: DSDX5 Firmware Reflash
Prerequisites
You’ll need a USB mouse and a USB flash drive or microSD card to update the firmware.
Prepare the upgrade media
The card or flash drive must be formatted VFAT so that the DSDX5 can read it.
Download the latest firmware OTA zip file and OTA SHA256 Hash from the links below. Please check the OTA hash. Copy the OTA zip file on to your microSD card or USB flash drive. Do not uncompress the zip file.
Eject your flash drive or microSD card safely to ensure that the data is completely written before unplugging it from your computer.
Update the firmware
Connect your USB mouse and insert the USB flash drive or microSD card in to your DSDX5.
From the app launcher, click on the UPDATER app.
Under the UpdateLocale section, click on Select and pick the ZIP file that you downloaded and saved to your microSD card or USB flash drive. If you don’t see any files to select from, then try reinserting your flash drive, and if it’s still not working then ensure that the flash drive is formatted VFAT and copy a fresh copy of the upgrade file on to it before trying again.
Once you have the ZIP file selected, click the Update button in the UpdateLocale section.
The device will warn you not to disconnect power whilst the upgrade takes place. Click Update to proceed. You’ll see a blue progress bar run across the top of the white section of the screen followed by a popup as the Android system updates itself.
The system will reboot and apply the upgrade. Once it returns to the normal desktop then the upgrade is complete. You can then remove the USB stick or microSD card.