RE543423 — Phoenix L21 ECU, John Deere 6125
Original (stock) ECU file for the John Deere 6125 — 4500 125HP, Phoenix L21 controller, hardware RE543423, software SW62075D. Unmodified factory read, usually within 3 hours after we confirm your ECU numbers.
Identification
| Vehicle | John Deere 6125 |
|---|---|
| Engine | 4500 125HP |
| Engine code | 4045HL495 |
| ECU | Phoenix L21 |
| Hardware number | RE543423 |
| Software number | SW62075D |
Compatibility
The same Phoenix L21 with part number RE543423 is also fitted to these vehicles / engines in our archive:
| Vehicle | Engine | Software |
|---|---|---|
| John Deere 6125 (this page) | 4500 125HP · 4045HL495 | SW62075D |
| John Deere 5085M | 4500 110HP · 4045HLV70 | SW62134C |
| John Deere 5085M | 4500 110HP · 4045HLV70 | SW62134D |
Cross references
Other software levels recorded on hardware RE543423:
Other hardware carrying software SW62075D:
What you get
A full, unmodified read of the Phoenix L21 as it left the factory — the binary file produced by the original reading tool, no checksum or map changes. Use it to restore a stock calibration after a failed flash or a bad tune, or as the reference file for a tuning job. One read is stored for this identification.
| Archive reference | Driver | Damos / A2L |
|---|---|---|
| JHD_E03A | JHD_E03A | — |
Delivery: released to your account and announced by email usually within 3 hours, within 24 hours on business days, once we confirm the read matches the numbers on this page.
Questions about this file
Is this original file compatible with my John Deere 6125?
Compare the hardware number (RE543423) and the software number (SW62075D) with the identification your tool reads from the ECU. The software number must match; a different hardware revision usually means a different file. Phoenix L-series controllers (John Deere) are identified by an RE part number such as RE532628 and an SW code; both are visible on the ECU label.
What exactly do I receive when I buy the Phoenix L21 original for €25?
An unmodified factory read of the Phoenix L21 (HW RE543423, SW SW62075D) as stored in our archive — a binary file in the format produced by the original reading tool. No modifications, no checksum changes: it is meant to restore the ECU to its stock calibration or to serve as a reference for a tuning job.
How and when is the file delivered?
After payment we confirm the read matches the numbers on this page and release it to your account, with an email notification — usually within 3 hours, within 24 hours on business days. If your ECU reports different numbers, tell us with the order and we look for the right file before delivering anything.
Can you also tune this Phoenix L21 or remove EGR / AdBlue / DPF?
Yes — upload your own read through the tuning service and choose the modifications; every tuning job is quoted individually before you pay. The original on this page is useful as a backup before any modification is flashed.