Follow the instructions and you should take note that everytime iRealSMS is opened it checks online to verify the serial. To stop the serial check follow the directions at the bottom:
  • Install iRealSMS from Cydia. Just Launch Cydia > Select “Sections” at haptic menu > Select “Messaging” category > and select “iRealSMS 2.0” or you can tap “Search” in Cydia and type “iRealSMS 2.0” > Select “install” button at the right top and confirm it to install.
  • Download the windows keygen HERE or HERE
  • Run the keygen to create the activation code
  • Open up iReal and tap on purchase or activate
  • Enter any email address and the activation code which is case sensitive so type it in exactly as read
  • It should register and your done

Note: As I stated above irealsms checks the serial everytime you open up the app so you must do the following the steps below or you risk getting your iphone/serial blacklisted on irealsms servers and you won’t be able to use it anymore.

  • SSh/DiskAid/iPhoneBrowse into your iphone. You may see instruction on how to ssh your iPhone
  • Go to /root
  • Find a folder that is called /etc and go into it
  • There is a file called hosts in the /etc folder
  • Copy that to your computer and open it with txt edit or open it within your ssh app
  • Add the following line below the last line after opening the hosts file
  • Save the file don’t click save as just save it as it is and copy it back to the etc folder
  • Respring/Reboot