We are all capable of doing things hope this work for you guys.
"STEP 1
Go to your browser and type:
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Log in or register now.
STEP 2
login with this credentials to enable telnet:
Username: f~i!b@e#r$h%o^m*esuperadmin
Password: s(f)u_h+g|u
STEP 3
Select Debug Switch
STEP 4
enable Telnet Switch and Web Admin Switch, and click Apply.
STEP 5
Open Command Prompt (Windows), or
Open Terminal (Mac), or
Use Putty
STEP 6 (type the command below)
telnet 192.168.1.1
STEP 7
login with this credentials on Command Prompt/Terminal/Putty:
Login: gepon
Password: gepon
STEP 8
Then type:
enable
a password prompt will show up and use this credential:
Password: gepon
CONTINUATION!!
STEP 9
after logging in type:
cd web
STEP 10
then type:
get web admin username adminpldt
(then it show you the password for the adminpldt, copy it or remember it!)
STEP 11
go to your browser and type
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(NOTICE: NOT ONLY "192.168.1.1/fh"!! Always put "https://" also not "http://"(but it will redirect you to https but it still different.))
STEP 12
then login your adminpldt and the password displayed in the telnet/CLI
Welcome!