This article was adapted for drivers and tuning professionals in the United States by Viezu USA. Measurements are shown in US units alongside the originals.
Supporting professional tuners and our dealer partners means passing on the updates that matter, and this one is big: MAGICMOTORSPORT's latest FLEX software release (v7.25.0.0) opens Bootloader access on McLaren supercars.
With it, you get full read/write control over the TCU and CCU units in models including the McLaren 720S, 620R and 540C, which run the MPC5554 microprocessor, with checksum correction built in.
Why It Matters
With this update, Viezu dealers can:
- Reach the internal Flash memory (with emulated EEPROM)
- Tune the TCU's shift logic
- Change McLaren CCU settings that govern hydraulic suspension balance and ride stiffness
- Get each operation done in 1 minute
Compatible packages:
- FLS0.2M/S – TCU OBD/Bench/Boot
- FLS0.4M/S – Boot Nexus MPC5xxx
- FLS0.5M/S – Full Master/Slave
Protocols added:
- McLaren TCU 14M1084CP (read/write/checksum)
- McLaren CCU 14B0303CP (read/write/checksum)
For dealers handling McLaren performance work, it's a powerful addition to the toolkit, letting you offer high-end customers more value with very short turnaround.
To get started, talk to your Viezu account manager or contact Viezu USA.
Don't have one yet? You can buy the Magic Motorsport FLEX tuning tool hardware here.
Talk to Viezu USA
Want to know what Viezu can do for your vehicle or your business? Request a performance upgrade quote, browse viezuusa.com or contact the Viezu USA team.