| Part number | Upgrade part number |
|---|---|
| 3S4A-12A650-AAA | 3S4A-12A650-AAB |
| 3S4A-12A650-AAB | 3S4A-12A650-AAC |
| 3S4A-12A650-AAC | 3U7A-12A650-FMA |
| 3S4A-12A650-ABA | 3S4A-12A650-ABB |
| 3S4A-12A650-ABB | 3S4A-12A650-ABC |
| 3S4A-12A650-ABC | 3U7A-12A650-FNA |
| 3S4A-12A650-MA | 3S4A-12A650-MC |
| 3S4A-12A650-MC | |
| 3S4A-12A650-NA | 3S4A-12A650-NC |
| 3S4A-12A650-NC | |
| 3U7A-12A650-FMA | 4U7A-12A650-KMB |
| 3U7A-12A650-FNA | 4U7A-12A650-KNA |
| 4U7A-12A650-KMB | 4U7A-12A650-KMC |
| 4U7A-12A650-KMC | |
| 4U7A-12A650-KNA |
OBDTester.com
2003 Ford Focus firmware update database
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