After conducting research, I found that the firmware link for the DSL3890 is usually provided by the Internet Service Provider (ISP) or the device manufacturer. The firmware can be downloaded from the ZTE website or obtained through the ISP's customer support.
D-Link DSL-3890 AC2300 is a dual-band VDSL2/ADSL2+ modem router primarily supported through D-Link's Australian and New Zealand resources. D-Link Australia 📥 Firmware Download Links
For example:
After conducting research, I found that the firmware link for the DSL3890 is usually provided by the Internet Service Provider (ISP) or the device manufacturer. The firmware can be downloaded from the ZTE website or obtained through the ISP's customer support.
D-Link DSL-3890 AC2300 is a dual-band VDSL2/ADSL2+ modem router primarily supported through D-Link's Australian and New Zealand resources. D-Link Australia 📥 Firmware Download Links dsl3890 firmware link
For example: