Where did you download the firmware 150902? I cannot find it on TP-LINK website.
You tried to upload the firmware Archer_C2_V1_141119(Unifi_and_Maxis_Fiber) here but failed?
http://www.tp-link.com.my/download/Archer-C2_V1.html#Firmware

I have the same problem when I did firmware upgrade on C2. The vLan setup function was missing after firmware upgrade and can't down grade back to original firmware as the Hardware version ID was changed when doing firmware upgrade.
Visited TP-Link service center and the technition help to upgrad to anewer beta version of firmware(dated on 151014) which in fact reset the hardware version back to original value and then downgrade back to the older version which suppots vLAN and then everything goes back to normal.

You may try the same process.

Gooo Luck

grayfoxmy wrote

Model : Archer C2

Hardware Version : Not Clear

Firmware Version : 0.9.1 3.2 v0032.0

ISP : TM Unifi

I have encountered once updated to Archer_C2_V1_150902 and the router setting has been reset to default.

The Unifi quick setup is no longer accessible and PPOE has failed to connect after configure.

The IPTV and vlan are not able to configure.

It is unable to revert back to the older firmware.

Is there anyway I could resolve the issue? Please advice.

Firmware Version:0.9.1 3.2 v0032.0 Build 150902 Rel.36287n
[B]Hardware Version:Archer C2 v1 00000001[/B]

Could you pass on that beta firmware?
Got the same problem