Improvements with this firmware:
1. Improved the unlock function. (Android OS)
2. Rectified the bug that PEQ does not function. (Android OS)
3. Rectified the bug that some M4A files do not sort correctly. (Android OS)
4. Rectified the bug that, under USB-DAC mode, the super gain doesn't work. （Mango OS）

Instructions For Firmware update:
1. Copy and paste the DX270_full_ota_1.01.182.zip to your SD card's root folder, or the DX270's internal memory.
2. Go to Android OS, press Settings-->System-->Updater-->local update, and tap the zip file.
3. The whole update will take about 10 minutes.  Reboot the DX270 after update completed. You can also choose to do a factory reset at this time to clear any artifacts from the previous firmware.