Motorola Cm340 Programming Software Work Info
If you buy a used CM340 and it is password-locked, the software cannot read it. You must physically short two test points on the circuit board to clear the password. This is an advanced hardware hack requiring soldering.
Programming the Motorola CM340 with manufacturer CPS enables tailored radio behavior for operational needs. Following disciplined workflows—backups, validation, testing, and documentation—reduces downtime and ensures regulatory compliance.
Yes, but with a critical condition: Motorola Solutions requires a valid MSI (Motorola Solutions Inc.) account and a current Software Entitlement (Subscription) . In plain English: you need a paid account (often $150–$300 annually) to legally download the CPS from their business portal. motorola cm340 programming software work
For individual users or small businesses, this is prohibitive. That is why you’ll find many resellers and third-party sites offering the software, but beware of malware. The safest path is:
Unlike older Motorolas (like the Maxtrac or GP300) that required true DOS, the CM340 is mostly Windows-friendly. Mostly. If you buy a used CM340 and it
The Fix: You either keep a dedicated $50 Windows 7 laptop from eBay, or you run a Windows XP virtual machine (VMware/VirtualBox) with direct USB passthrough—not shared folders. Bridging the USB controller is the only way.
Today, Motorola no longer sells or supports RVN4191. You cannot download it from their website. It lives on in shadow archives, peer-to-peer transfers, and dusty CDs stuck to the inside of old service manuals. Programming the Motorola CM340 with manufacturer CPS enables
For the hobbyist or small business owner, the takeaway is this: The Motorola CM340 is an excellent, bomb-proof radio if you already have a working programming setup. If you are starting from scratch, expect to spend more time wrestling with virtual machines, driver conflicts, and finding a trustworthy copy of CPS than actually programming the channels. It is a rite of passage—and a reminder that professional two-way radio has always been as much about software licensing as about hardware durability.
| Error Message | Solution | | --- | --- | | Error opening COM port | Change COM port to 1-4 (as above) and close any other app using serial ports. | | Communication Failed | Check cable drivers; try a powered USB hub (some laptops undervolt the USB port). | | Codeplug version too new | Your radio was programmed with a newer CPS version. You need the same or newer CPS. | | Unable to read radio – check connections | Ensure the radio is OFF before connecting the cable. Wait for the software to prompt you to power on. |