4 min read
Source: CGDI / GODIAG — August 2026
Locksmiths can now duplicate NCF29Ax encrypted smart keys — the kind fitted to late-model Hyundai, Kia, Chevrolet, and Land Rover vehicles — without ever touching a soldering iron. A new GODIAG solder-free clip adapter, paired with the CGDI K2 key tool's V5.8.0 software, reads the encrypted data straight off the original key's PCB and writes it to a matching blank, turning a high-risk micro-soldering job into a clean, clip-on bench task.
What NCF29Ax Keys Are and Why Cloning Used to Be a Bench Nightmare
NCF29Ax is a family of NXP encryption chips used inside the smart keys and keyless entry remotes of a huge slice of the modern vehicle fleet. Hyundai Sonata (4A board) and Elantra (47 board), plus a long list of Kia, Chevrolet, and Land Rover models, all rely on this chip to hold the encrypted immobilizer and remote data. When a customer loses a key or wants a spare, cloning that data is often the fastest way to get them back on the road — no OBD session, no dealer visit.
The problem has always been the method. Reading an NCF29Ax chip traditionally meant desoldering it from the original key board, transferring it to an adapter, reading the data, and soldering it back. That is micro-soldering on a customer's only working key, and one slip of the iron can destroy a $250–$400 remote. For a solo locksmith on a roadside call, the risk has historically been hard to justify — which is why many shops either turned the work away or outsourced it.
How Solder-Free Cloning Works with CGDI K2
CGDI K2 changed the math. The V5.8.0 software update added NCF29xx encrypted key reading under the MCU Programmer menu, and the tool no longer requires you to lift the chip. Instead, the on-screen wiring diagram shows exactly which test points to contact, and you attach the included remote renew cable leads directly to the board. The K2 reads the encrypted data in place, you save the file, then write it to a new or used key that matches the original frequency.
The new GODIAG solder-free clip adapter takes the same idea one step further. Rather than clipping individual test leads, the adapter aligns with the key's PCB and connects to the K2 through a converter, so the connection is stable and repeatable across the same board layout. The workflow is effectively: disassemble the key shell, clip the adapter onto the board, read the data, then write it to the target key. No heat, no flux, no chip removal.
CGDI K2 vs. KEYDIY KD-X4: Two Roads to the Same Key
CGDI K2 is not the only tool that handles NCF29Ax keys, and the choice between the two dominant options comes down to how much risk you are willing to accept on the bench.
The KEYDIY KD-X4 takes the chip-removal route. You desolder the NCF29Ax chip, solder it onto a dedicated 13# remote chip reading adapter, read the data, and write it to a KEYDIY C29AX71 synchronized smart key. It is a proven method with broad chip coverage (NCF29A1/A2/A3/A4, NCF2953, NCF2954), but every step involves a hot iron on a customer's original key.
CGDI K2, by contrast, is solder-free end to end. It supports NCF29A1, NCF2951, NCF2953, NCF295E, and NCF2971, reads the chip while it is still on the board, and needs no chip removal or heat at all. For locksmiths who do not want to risk a client's expensive original, the clip-adapter route is the safer, faster workflow — and the V5.8.0 update is free for existing K2 owners.
What You Need and the Step-by-Step Flow
The tool list is short. You need a CGDI K2 key tool running V5.8.0, the original smart key, and a target key — either brand-new or a used original with the identical frequency. For the connection you either use the included remote renew cable (soldering a few points) or the new GODIAG solder-free clip adapter if you want a fully clip-on process.
From there the procedure is straightforward:
- Expose the board. Open the original key shell to reach the PCB, and line the solder-free clip up with the board, connecting it to the K2 through the converter.
- Read the original. In the K2 app choose Key Adding, then the Hyundai/Kia smart key cloning function, pick the board layout that matches your PCB, and start the read. Save the extracted data file.
- Write to the target. Return to the previous screen, connect the target key, upload the saved file, and let the K2 write the data. The clone is ready to use without any in-car programming.
For shops building out their key programming bench, the core hardware lives in the auto key programmer collection, with matching car remote keys and car key chips for stocking the blanks and originals you will need on hand. If you don't yet own the tool itself, it is stocked alongside the rest of the CGDI product range.
Which Chips and Vehicles Are Covered — and the Fine Print
CGDI K2's NCF29Ax function covers NCF29A1, NCF2951, NCF2953, NCF295E, and NCF2971. Verified results from the field include Hyundai Elantra 47 and Sonata 4A boards, with Kia, Chevrolet, and Land Rover NCF29Ax keys reported working through the same flow. The two hard rules to remember: the target key's frequency must match the original, and the NCF29AG chip variant is not supported at the time of writing.
For anyone already running CGDI hardware, the V5.8.0 update and the clip-adapter route are worth testing on a scrap key before the first paying job. The real payoff is the risk you remove from the workflow — a soldering-free clone means a damaged original key is no longer the cost of doing business.
Written by Roberto Vargas, Key Programming & ECU Specialist at vxdas.com
