Unlike high-end Android head units that may offer "Over-the-Air" (OTA) updates, the (a non-DVD, "deckless" unit) often needs its internal IC memory chip to be manually reflashed if the system becomes corrupted or unresponsive.
Q: Can I downgrade my firmware to a previous version? A: It's not recommended to downgrade your firmware to a previous version, as this may cause compatibility issues and void your warranty. Download Firmware Head Unit Dhd 4300