If you have OSX Snow Leopard and want to install your T-Mobile Broadband Modem on it be wary.  I had a problem today which is fairly hard to solve in the beginning but you can repair the problem caused by it.

This problem specifically affects the T-Mobile Broadband Modem: ZTE MF626.

When the installer has completed you will notice that you can connect to the internet but you won’t be able to access many of the functions in system preferences, also your mac won’t boot into Snow Leopard.  The problem is caused by the ZTE installer replacing a core system file (libcurl.4.dylib), that file is pretty much used by everything; including the boot process of your mac.

Luckily we can restore this file once the installer is completed and your mac will be as good as new.

DO THE FOLLOWING BEFORE YOU INSTALL THE SOFTWARE!

The Fix

Firstly we need to reveal all our hidden files we can do this via terminal (Applications > Utilities > Terminal) type the following command:

defaults write com.apple.finder AppleShowAllFiles TRUE
killall Finder

This will let you find the folder: usr/lib/

Make sure you’ve copied that: libcurl.4.dylib into another directory before we continue.

Now you’ve got a copy of the above file go ahead and install the T-Mobile software.

Once it’s installed we need to find the: usr/lib directory again, simply copy and paste the libcurl.4.dylib file in and you’ll be good to go.

If you didn’t copy it, or can’t find it, you can use mine click here to download it.

Just for the sake of neatness we’ll re-hide those pesky hidden files by doing the following again in terminal.

defaults write com.apple.finder AppleShowAllFiles FALSE
killall Finder

That’s it, and you should be good to go.