This tutorial will help determine the ThermaTouch control firmware version and give a link to the procedure to update it.
Step 1:
Slide the control
Step 2: 
Touch USER1
Step 3:
Touch Settings
Step 4: 
Touch General
Step 5:
Touch About
Step 6:
Version 7.5
If the firmware version is 7.5, the control cannot be updated
Version 7.6
If the firmware is 7.6, follow these instructions to update the control to version 7.7:
ThermaTouch - Update firmware (ver 7.5 and 7.6)
Version 7.7
If the firmware is 7.7, follow these instructions to update the control to version 8.0:
ThermTouch - Update firmware (ver 7.7)
Version 8.0 and later versions
All versions later than 8.0 update automatically, if the device is connected to the internet. Touching the Check for Updates button is not necessary. The automatic updates will begin at around 12:20 AM on Monday, if an update is required.
Forcing an update right now:
Option 1 (update all apps)
This is the only option for version 8.0. It also works for other versions. Make sure the device is connected to the internet:
ThermaTouch - Connect device to internet
Then, reboot the ThermaTouch:
This will update the TouchSteam app, any external apps, and ThermaStore app. The updates will be scheduled to happen at 20 minute intervals and should complete within an hour or two. TouchSteam updates first, then the installed apps, with ThermaStore being the last to update. The time required to update will vary.
Option 2
For version 8.2.0 through 8.2.3, there is a hidden APP UPDATE button that is revealed when the unit is in Service mode. This button will force the TouchSteam app to update immediately, if an update is required. The button can be found in the Settings menu when the device is put into Service mode. The instructions are here:
ThermaTouch - Updating firmware (ver 8.2.0 thru 8.2.3)
For version 8.2.4 thru 8.3.0, there is a button labeled APP UPDATE on the Settings > General > About screen. The instructions are here:
ThermaTouch - Update firmware (ver 8.2.4 and later)
For version 8.4.0 and later, there is an option on the Settings > General > About screen labeled System updates. The instructions are here:
ThermaTouch - Update firmware (ver 8.4.0 and later)
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