# End of Life Remote Diagnostics Unit
The following Wolf remote diagnostic unit’s are EOL or EOL soon, please contact our sales team for a hardware upgrade:
| Manufacturer | Type | Firmware | State |
| Helmholz | Rex300 | 3.x.x | EOL |
| Helmholz | Rex300eco | 3.x.x | EOL |
| Helmholz | Rex300 | 5.1.11 | EOL 30.06.2024* |
| Helmholz | Rex300eco | 5.1.11 | EOL 30.06.2024* |
* if no other server update require an earlier EOL
| Manufacturer | Type | Firmware | State | Helmholz | Rex200 | 6.x.x | Firmware Update Required |
| Helmholz | Rex250 | 6.x.x | Firmware Update Required |
| Helmholz | Rex200 | 7.x.x | Active |
| Helmholz | Rex250 | 7.x.x | Active |
| Teltonika Networks | RUTX08 | 7.x.x | Active |