^^ Em tình cờ nhặt được trên mạng.
For Firefox:

* First go to
Code:

http://addons.mozilla.org/firefox/59/

* Click Install Now to install addon.
* Restart FF. Tool-->User Agent Switcher--->Options--->Options
* Click User Agents--->Add
* Type this:
+ Description: MEGAUPLOAD
+ User Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Alexa Toolbar)
* Click OK twice to finish adding User Agent.


From now, before downloading any file on megaupload just go Tools--> User Agent Switcher--->MEGAUPLOAD.

Quote:
For IE:

* Start/run->> type regedit -> ok
* Go to: [HKEY_LOCAL_MACHINE\SOFTWARE\Mic*ft\Wi ndows\CurrentVersion\Internet Settings\5.0\User Agent\Post Platform]

Note: if U use IE 7

go to: [HKEY_LOCAL_MACHINE\SOFTWARE\Mic*ft\Wi ndows\CurrentVersion\Internet Settings\User Agent\Post Platform]
* Right click on Post Platform --> New --> String Value --> type Alexa Toolbar --> ok

(nguồn Milworm)