Go to the 4PDA topic "ГУ ZXDZ-01, WJ, на базе процессора МТ/АС8227L".
Before downloading any firmware, it is crucial to identify your unit's exact specifications. The Zxdz 01 is a generic device made by various Chinese manufacturers, and using the wrong firmware can cause a 'hard brick' (rendering the device unusable). Zxdz 01 Latest Firmware