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Update OTA.md

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@ -24,7 +24,7 @@ This is because HomeSpan checks that a sketch has been compiled with OTA partiti
* If a sketch you've uploaded with OTA does not operate as expected, you can continue making modifications to the code and re-upload again. Or, you can upload a prior version that was working properly. However, the Safe Load features described above cannot protect against a HomeSpan sketch that has major run-time problems, such as causing a kernel panic that leads to an endless cycle of device reboots. If this happens, HomeSpan won't be able to run the OTA Server code, and further OTA updates will *not* be possible. Instead, you'll have to connect the device through a serial port to upload a new, working sketch. **For this reason you should always fully test out a new sketch on a local device connected to your computer *before* uploading it to a remote, hard-to-access device via OTA.**
* The ESP IDF supports "automated" rollbacks that are designed to solve the problem of endless reboots after a bad upload by automatically rolling back the device to a previously-working sketch if the latest sketch causes a reboot before being able to set a self-test flag verifiying the code is operating correctly. However, this feature is *not* enabled in the latest version of the Arudino-ESP32 library (2.0.2 at the time of this posting), and cannot be accessed without recompiling a custom version of the board manager.
* The ESP IDF supports "automated" rollbacks that are designed to solve the problem of endless reboots after a bad upload by automatically rolling back the device to a previously-working sketch if the latest sketch causes a reboot before being able to set a self-test flag verifying the code is operating correctly. However, this feature is *not* enabled in the latest version of the Arudino-ESP32 library (2.0.2 at the time of this posting), and cannot be accessed without recompiling a custom version of the board manager.
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