The Apple Watch Diagnostic Port can directly interface with all Apple Watches up to the Apple Watch Series 6 and Apple Watch SE (1st generation) through an Apple Watch Restore Tool (AWRT) for software restoration or diagnostic purposes.
The port has undergone several revisions across the Apple Watch's History. Starting with a 6 Pin style connection in the Apple Watch (1st generation) to the Series 1, a 5 Pin style connection in the Series 2 and 3, and a "New Style" revised 6-pin connection for the Series 4 up to the Series 6 and SE (1st) until the new Wireless Solution found in the Series 7 onwards utilizing 60.5 Ghz Wireless Technology to interface with the supported Watches.
The Wireless Solution is a lesser-known successor to the original Diagnostic Port. Unfortunately, unlike its predecessor, it is rarer to find and when it is found it usually doesn't go as cheaply as its older variant.
Below is the Apple Watch Restore Tool Compatibility Table, which matches the Pins and "Style" pictured in the images when buying an AWRT for your particular Apple Watch. No other Variants appear to exist for the Wireless AWRT.
| Apple Watch | Number of Diagnostic Port Pins | AWRT Style | Model Number | ||
|---|---|---|---|---|---|
| 38/42mm - 40/44mm - 45mm | |||||
| Apple Watch (1st generation) | 6 Pins | Old Style | - | ||
| Apple Watch Series 1 | |||||
| Apple Watch Series 2 | 5 Pins | ||||
| Apple Watch Series 3 | |||||
| Apple Watch Series 4 | 6 Pins | New Style | A2073 | ||
| Apple Watch Series 5 | |||||
| Apple Watch SE (1st generation) | |||||
| Apple Watch Series 6 | |||||
| Apple Watch Series 7 | - | Wireless | - | ||
| Apple Watch SE (2nd generation) | |||||
| Apple Watch Series 8 | |||||
| Apple Watch Ultra | |||||
| Apple Watch Series 9 | |||||
| Apple Watch Ultra 2 | |||||
Photos
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Old Style AWRT for the Apple Watch Series 0-3.
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New Style AWRT for the Apple Watch Series 4-6 and SE (1st).
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An Antenna for the Wireless AWRT Solution.
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The front of the Wireless AWRT board, with the antenna attached.
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The back of the Wireless AWRT board, with the antenna attached.
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A red board, found inside of a AWRT.
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A black board, found inside of a AWRT.
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A grey board, found inside of a AWRT.
