Major firmware updates (like jumping from V6 to V8) often reset the modem to factory default settings. You will need to re-enter your PPPoE username/password and Wi-Fi SSID/Password credentials.
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0 FTTH Product Overview. F660 V8. 0 is a GPON Optical Network Terminal designed for HGU (Home Gateway Unit) used in FTTH scenario, www.ycict.net ZTE ZXHN F660 V7.1 Download Firmware - AliExpress Major firmware updates (like jumping from V6 to
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