How I got two-sided printing and scanning working on my brother MFC7860DW over wireless

the packages came from:
http://welcome.solutions.brother.com/bsc/public_s/id/linux/en/index.html

make sure the pre-reqs are installed:

sudo apt-get install ia32-libs
sudo aptitude install lib32stdc++ 

[I got an error with the stdc++ install with apt-get but it worked fine with aptitude ('Unable to correct problems, you have held broken packages')]

Download the debs from the brother  printer drivers page . For me, would not install through the software center (and according to the instructions you're meant to run it from the terminal), so I ran

sudo dpkg  -i  --force-all 'mfc7860dwlpr-2.1.0-1.i386.deb'
sudo dpkg  -i  --force-all 'cupswrapperMFC7860DW-2.0.4-2.i386.deb'

For network setup (for usb see this page)
go to:

http://localhost:631/printers 

in your browser
click MFC-7860DW and then from the dropdown menu under administration - "Modify Printer" and set following parameters*

select:

Device: "LPD/LPR Host or Printer" or "AppSocket/HP JetDirect" (I selected "LPD/LPR Host or Printer")

then:

URI: lpd://(Your printer's IP address)/binary_p1

note that your printer's IP address needs to be fixed in some way so that you can continue printing to it. I can fix IP addresses with my router so that's how I did it.

My device wasn't listed under drivers, and there's no available ppd so I just selected 7840DW Foomatic - note: when I selected the brother driver, I actually couldn't print two-sided, which is bizarre.

It added a device on localhost to my printers list at some point, but this one didn't work.

Still no booklet option, but it does now print two-sided.

SCANNING
First of all:

sudo apt-get install sane-utils xsane

Downloaded the debs from here. They installed with the software center, though you do have to click 'Ignore and install'.
scan-key-tool 64bit (or 32bit obviously if you're running 32 bit)
brscan4 64bit 

then in the terminal

brsaneconfig4 -a name=MFC-7860DW model=MFC-7860DW ip=192.168.1.108

with the IP address you are using substituted at the end.

and then it worked fine for me with the default scanning application!

------
hat-tip to: http://ubuntuforums.org/archive/index.php/t-1854483.html

*if you get a password prompt, and you haven't set a password, then from the terminal:

sudo lppasswd -a

then you'll get a prompt asking you for a password. Your username is your current ubuntu username.

davmail not starting

So, attempting to install davmail on pretty much a new install - ran the deb, tried to run it, didn't open but appeared to be running. Did have java installed (only have openjdk installed, unlike my other install where sunjava causes the problems with davmail), and when I ran it from the command line I get:

Exception in thread "SWT" java.lang.UnsatisfiedLinkError: Could not load SWT library.

Which led me to this bug report (under DavMail, even though it's a openjdk bug?), which solved it with:

sudo apt-get install libswt-cairo-gtk-3-jni

which worked a treat.