OK! I got it fixed! This time by using hideuseragent. I'm sorry to the maintainer of the hideuseragent that I said before it doesn't work for facebook. Yes, default hideuseragent doesn't work for http://m.facebook.com, it's the FAULT of facebook, because it tends to throw everything it won't recognize to mobile version. (See the first screenshot)

Here is the procedures to change User Agent of MicroB:

1) (As root) apt-get install hideuseragent
2) Go to Setting, find Hide User Agent
3) Click User Agent
4) Enter(better copy&paste): Mozilla/5.0 (X11; U; Linux armv6l; en-US; rv:1.9a6pre) Gecko/20070810 Firefox/3.0a1 Tablet browser 0.1.16 RX-34_2007SE_4.2007.38-2
5) Press Set (See second screenshot)

Now you can browse the http://www.facebook.com full version.

In response to mukks, you may change the user agent to the following if you want it to redirect you to Facebook Touch:

Mozilla/5.0 (Linux; U; Android 2.1; en-us; dream) AppleWebKit/525.10+ (KHTML, like Gecko) Version/3.0.4 Mobile Safari/523.12.2

Mozilla/5.0 (SymbianOS/9.4; U; Series60/5.0 Nokia5800d-1/21.0.025; Profile/MIDP-2.1 Configuration/CLDC-1.1 ) AppleWebKit/413 (KHTML, like Gecko) Safari/413

Mozilla/5.0 (SymbianOS/9.2; U; Series60/3.1 NokiaE71/1.00.000; Profile/MIDP-2.0 Configuration/CLDC-1.1 ) AppleWebKit/413 (KHTML, like Gecko) Safari/413

Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420+ (KHTML, like Gecko) Version/3.0 Mobile/1A542a Safari/419.3

Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_0_1 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7A400 Safari/528.16

Mozilla/5.0(iPad; U; CPU iPhone OS 3_2 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B314 Safari/531.21.10


Hope this help.

Ref: http://gerrymoth.co.uk/?p=108


(I think we can make it as FIXED now. ^^)

EDIT: Thanks to Santiago at #55, the following user agent can work with facebook's chat. Therefore, the procedures above are changed accordingly:
Mozilla/5.0 (X11; U; Linux armv6l; en-US; rv:1.9a6pre) Gecko/20070810 Firefox/3.0a1 Tablet browser 0.1.16 RX-34_2007SE_4.2007.38-2