Earlier I was having problem with this 3 in 1 – Modem – Wireless AP – Router. The router hangs frequently especially running p2p applications. After much effort to search for solution, I came across the enlightenment of the firmware version – 120.106m.1 Build 017
Here’s a share of the file.
I hold no responsibility on the shared files.
Solution For Single PC
By the way, if you uses this Aztech DSL605EW alone aka using with a single computer, I would advise you to set the connection type to Bridge and dial up to ISP manually in your OS. That way, you won’t have to deal with the upgrade of firmware. (Which might screw up the whole hardware if not carefully done)
Aztech Support
Below is the contact of Malaysia’s Aztech Support team. You can ask them to send you the firmware 
Aztech Malaysia Support
105 & 106, Ground Floor, Block A, Kelana Business Centre,
97, Jalan SS7/2, Kelana Jaya, 47301 Petaling Jaya, Selangor.
Tel: (603) 7804-8450 Fax: (603) 7804-8457
Operating Hours: 8:30am – 5:45pm (open during lunch hour),
Monday – Friday except public holidays. (Map)
Aztech Malaysia Support (Sabah Branch)
Unit B-3-6, 3rd Floor, Plaza Tanjung Aru,
Jalan Mat Salleh, 88100 Tanjung Aru,
Kota Kinabalu, Sabah.
Tel: 088-270-850 Fax: 088-270-848
Operating Hours: 8.30am – 1pm, 2pm – 5.45pm
Monday – Friday except public holidays.
淡霓似的天空 ~~~ 
Hello all,I wish you help me,I\’ve connected this modem, and every light is showing yellow so its ok, except the internet:red !so whats the problem?thanks in advance