Most Retevis CPS programs have a "Language" menu at the top. Click through the menus (usually the second to last one) to find the English toggle.
The software will not communicate with your radio unless the correct USB driver is installed. Rt15-cps Software Download
Once you’ve entered your frequencies, save the file as a .dat or .conf file on your computer so you can quickly program multiple radios to the same settings. Troubleshooting Common Issues Most Retevis CPS programs have a "Language" menu at the top