Hey guys i updated to the retail firmware 2.10. I tried to downgrade it to 2.08 TM but it says failed. How do i fix this?

i use dlink recovery mode to re-flash 2.08TM, since the usual interface only allows upgrade

i learned from this site : http://forums.dlink.com/index.php?topic=44909.0

preparation :
-download 2.08TM firmware on your computer
-connect your computer to router using LAN cable
-set your computer's ethernet ip to static ip 192.168.0.2

assess recovery mode :
-power off your router
-use a pin ( or something similar) and poke/press the reset button
-while hold-press the reset button for 3-5 seconds, press the power button while hold-press the reset button until you see the power indicator is in amber colour and blinking ( now router is in recovery mode )

re-flash 2.08TM firmware
-on your computer, open up browser and login to 192.168.0.1
-it will show Dlink Recovery mode
-click select to choose the 2.08TM firmware, and then click upload
-wait until the process finish, it will autorestart
-check the version, it should say 2.08TM 

setup unifi and wifi settings
-since the router is reset, all settings are lost
-you will need to re-enter all unifi settings and personal settings again.

It worked for me, i hoped it works for you

See below, post #102 in this thread by Eterman

Wah? U guys even the settings cannot save?

What browser did u guys use? I use chrome browser and it works fine, I remembered reading somewhere that other browser might cause that save issue...

And, it's best practice after flashing the firmware, reset the router to factory default settings, I encountered no internet also at first but after done that, set everything again, now all good except the things i mentioned b4...

I use Chrome too, but can't save unifi settings... 

Well, I guess that retail firmware is kinda buggy...

Maybe they rush it out to rectify the security loopholes first & missed about that annoying problem...

Sigh 

May I know where to download 2.08TM version? I dont want retail firmware.
I cant upgrade using its own updater. Everytime I press "check for new firmware", no response at all

Its seems that tm have release the official firmware for Unifi customer

https://www.lowyat.net/2017/144220/dlink-di...pdate-tm-unifi/

Look at one of the comments :

You're forced to stick with the "@unifi" suffix after the upgrade. Even my original SSID "xxxxx@unifi" now becomes "xxxxx@unifi@unifi" lol

What da hell la

Updated to 2.09..I use the updater in router..

[attachmentid=9174939]

After updated to 2.09, SSID forced to have @unifi at the back..

[attachmentid=9174940]

[attachmentid=9174941]

After updated to 2.09, noticed that Whatsapp send out message sometimes will delay.. 

By the way, order new router to replace this shitty router.. 

Look at one of the comments :

You're forced to stick with the "@unifi" suffix after the upgrade. Even my original SSID "xxxxx@unifi" now becomes "xxxxx@unifi@unifi" lol

What da hell la

At least it is easier for you to retain your original SSID.
You just use xxxxx and it becomes your original SSID xxxxx@unifi.

Too many wifi are using the same name with "@unifi" suffix like tm wifi (wifi@unifi), pppoe id, my nextdoor SSID....etc.
This suffix "@unifi" after successful upgraded, Is possible to change or rename or omit ?