Free Lifetime Map Updates for Brand-New CMNAV Sat Navs Purchased Directly from cmnav.co.uk
Eligibility & Order Verification:
Free lifetime map updates, warranty cover and complimentary technical support are provided as a goodwill benefit to the original purchaser of a brand-new CMNAV sat nav purchased directly from cmnav.co.uk.
To ensure the correct files are issued and to protect customers, we must be able to verify the original order in our records. This does not mean customers are expected to retain paperwork indefinitely; wherever possible, we will attempt to identify an order using our internal records.
Update Release Information:
Map updates are typically released once a year, although there is no fixed schedule. The timing depends on when new data is finalised by our mapping provider.
After the initial release, it can take an additional 2–3 weeks for all related content — such as speed cameras and points of interest — to be completed. We wait until all content is fully available before releasing update packs to avoid incomplete or unstable updates that may cause navigation issues.
Requirements to Perform Updates Yourself:
- A desktop or laptop computer running Microsoft Windows (macOS or other systems are not guaranteed to work).
- A stable internet connection - mobile data may be used, but please check your data plan for any limits or charges.
- A few spare hours and a bit of patience - updates are large and can take time.
How to Request an Update:
The fastest way is to email us at contact@cmnav.co.uk with one of the following:
- Your order number, OR
- Your full name and first line of address as used at the time of purchase, OR
- A clear photo of the original invoice supplied with the product (also emailed at purchase).
This allows us to verify the purchase, confirm the exact model supplied, and ensure we send the correct update files.
Important: Photos of the sat nav alone, serial numbers on their own, or screenshots of bank or card transactions cannot be accepted as proof of purchase, as they cannot be reliably linked to a specific order in our system.
Update Process:
Once order verification is complete and an update is available, we will email a secure download link along with a step-by-step video tutorial. These guides are designed so that anyone, regardless of technical skill level, can successfully complete the update.
For Customers Without Windows Computer Access:
If you do not have access to a compatible computer or internet connection, we can perform the update for you in-house. In this case:
- You must send the unit to us using a tracked postal service.
- The service charge is ÂŁ25, which includes the return postage from us back to you.
- If required, we can provide a prepaid postage label, or you may pay directly at the post office.
Updates are typically performed only after the unit is received and inspected, unless otherwise agreed. This ensures the correct files are applied and that the device is in working order before and after the update.
Second-Hand or Unverified Units:
Units obtained second-hand (including those sold with a vehicle, purchased privately, or obtained via third-party resellers) are not eligible for free lifetime map updates, warranty cover, or complimentary technical support unless we can verify the original order and confirm eligibility under the original purchase.
Where a unit cannot be verified, we may still be able to assist via paid services, subject to compatibility.
Please note:
- Failure to provide sufficient information to verify the original purchase may result in the free update request being declined.
- Our updates are designed exclusively for CMNAV sat navs. Installing them on non-CMNAV devices may cause permanent damage, for which we cannot be held responsible.
- Unreasonable, abusive, or dishonest requests will be declined and may be reported if necessary.
Contact for Queries:
For questions, use the Help button at the bottom-right of the website to choose your preferred contact method. We aim to reply within 2 hours during working hours, but if we're not available, we will respond as soon as possible.
Storage Limitations on Older Devices:
Map data grows each year as new roads and points of interest are added. Over time, this may exceed the internal storage capacity of some older or entry-level devices.
Options in this situation:
- Preloaded microSD card (£25) – Provides full European maps and ensures smooth performance.
- Reduced coverage – Install a smaller map set, such as only the UK, or UK + Western Europe, to fit within existing storage.
We can help you determine which solution is best for your specific model.
Disclaimer & Conditions:
C & M Navigation Systems provides Free Lifetime Map Updates as a goodwill benefit tied to the original purchase of a brand-new CMNAV sat nav.
- This policy does NOT apply to Certified Refurbished, open-box, or second-hand units, regardless of where they were purchased.
- We reserve the right to refuse or discontinue map updates without prior notice if there is evidence of:
- Fraudulent activity, including false claims of purchase or ownership,
- Attempts to obtain files for competing commercial purposes, or
- Behaviour that is dishonest, abusive, threatening, or harassing towards our staff.
Free Lifetime Map Updates remain available for the life of the product model or until C & M Navigation Systems ceases trading. If a model is discontinued or if our business stops operating, this service will end.
C & M Navigation Systems Team
Last Updated: 12 December 2025