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Updated Upgrade (markdown)

Michael Ingraham 2019-10-17 18:02:46 -04:00
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Upgrade.md

@ -4,6 +4,19 @@ The first rule of upgrading: _**If it ain't broke, don't fix it!**_ In other wor
Any time you upgrade it is highly recommended that you [back up your device settings](#device-settings). This is found in the web UI under the `Configuration` menu. Any time you upgrade it is highly recommended that you [back up your device settings](#device-settings). This is found in the web UI under the `Configuration` menu.
# Device Settings
Tasmota uses flash memory to store many options and settings. Newer versions of Tasmota add features and use more and more of this area than earlier versions. These regions of flash were therefore not used by Tasmota before. If you did not erase flash when you originally flashed your device, a newer update may be accessing areas with values left over from the original factory firmware. Therefore there could be unexpected behavior. It is best to address this before upgrading across major versions of Tasmota.
1. Make a configuration backup using one of these two methods:
- Use `decode-config.py` from the Tasmota [`tools` code folder](../tree/development/tools) to create the backup in human readable form:
`decode-config.py -d <deviceIP> --backup-file Config-@H-@f-@v --backup-type json`
- If you have a `.dmp` backup already, you can create a JSON extract from that file:
`decode-config.py -f <dmpFile> --backup-file Config-@H-@f-@v --backup-type json`
2. Perform a `Reset 6` (erases flash settings area but retains Wi-Fi and MQTT settings)
3. Upgrade the firmware
4. Restore configuration
Particularly the older your current Tasmota versions is, it is probably best not to restore the backup directly since there may be some outdated settings in your configuration. There are often newer better alternatives, particularly since an upgrade is normally done to use new features. Configure the device manually referring to the [Commands article](Commands) and the settings (e.g., SetOptions, Rules, etc.) in the JSON file you created in step #1.
## Upgrading via OTA ## Upgrading via OTA
It is recommended (and more convenient) to upgrade the device firmware [over-the-air](https://en.wikipedia.org/wiki/Over-the-air_programming), without a serial connection, while being connected to AC and operational. It is recommended (and more convenient) to upgrade the device firmware [over-the-air](https://en.wikipedia.org/wiki/Over-the-air_programming), without a serial connection, while being connected to AC and operational.
@ -64,16 +77,3 @@ So to migrate from **Sonoff-MQTT-OTA-Arduino versions before 3.1.0** to **Tasmot
2. Migrate to **Sonoff-Tasmota 4.x** 2. Migrate to **Sonoff-Tasmota 4.x**
3. Migrate to **Sonoff-Tasmota 5.14** 3. Migrate to **Sonoff-Tasmota 5.14**
4. Migrate to **Tasmota 6.x** 4. Migrate to **Tasmota 6.x**
# Device Settings
Tasmota uses flash memory to store many options and settings. Newer versions of Tasmota add features and use more and more of this area than earlier versions. These regions of flash were therefore not used by Tasmota before. If you did not erase flash when you originally flashed your device, a newer update may be accessing areas with values left over from the original factory firmware. Therefore there could be unexpected behavior. It is best to address this before upgrading across major versions of Tasmota.
1. Make a configuration backup using one of these two methods:
- Use `decode-config.py` from the Tasmota [`tools` code folder](../tree/development/tools) to create the backup in human readable form:
`decode-config.py -d <deviceIP> --backup-file Config-@H-@f-@v --backup-type json`
- If you have a `.dmp` backup already, you can create a JSON extract from that file:
`decode-config.py -f <dmpFile> --backup-file Config-@H-@f-@v --backup-type json`
2. Perform a `Reset 6` (erases flash settings area but retains Wi-Fi and MQTT settings)
3. Upgrade the firmware
4. Restore configuration
Particularly the older your current Tasmota versions is, it is probably best not to restore the backup directly since there may be some outdated settings in your configuration. There are often newer better alternatives, particularly since an upgrade is normally done to use new features. Configure the device manually referring to the [Commands article](Commands) and the settings (e.g., SetOptions, Rules, etc.) in the JSON file you created in step #1.