I am having trouble with my new 4iiii power meter. What should I do?

My 4iiii Precision 3+ (left-crank PM), shows extreme values since my last 2 rides (e.g. >1500w for significant parts of my ride). Contacted 4iii and they suggest to follow the steps below:

Hope this helps, no guarantees;), I still need to perform these steps.

Let’s experiment to determine if your powermeter is faulty or if the issue lays with your other connected devices. Here is what I would like for you to try out:

Starting with your smart phone:
1) Open the 4iiii app and remove any previously paired powermeters.
2) Delete the 4iiii app from your phone.
3) Power cycle off/on your phone.
3) Re-install the 4iiii app.

On your cycling computer:
1) Delete any paired powermeters.
2) Check for an update any firmware needed (this may need to be done via your home computer).
3) Power cycle off/on your cycling computer.

On your bike:
1) Open the lid and remove the battery.
2) With a new CR2032 battery, install it upside down placing the + onto the brass contacts. Hold for 5 seconds.
Note: This is a hard reset of your device. It works similarly to ‘force quitting’ a program on your computer by breaking any ghost connections and restoring the factory settings.
3) Install battery normally and close the cap.

Now we are going to build back up your connection to the powermeter and test function:
1) Open the 4iiii app. Spin cranks 10-15 times to wake up the device.
Search and pair your powermeter to the 4iiii app.
2) Perform a zero-offset with your left crank down in the 6 o’clock position.
Note: ‘Failure to Zero Offset’ or ‘Error 20’ indicates that the powermeter has developed a fault. Screen shot this and reply to me along with your receipt from purchase. If successful, please carry on to test rides below.

Test ride 1 – <15min steady state (no erg mode if riding indoors):
Record your ride with only the 4iiii app (BLE signal).
No other connected devices please.
Download .Fit file and send to 4iiii

Test ride 2 – <15min steady state (no erg mode if riding indoors):
Record you ride connected to your cycling computer (ANT+ signal).
No other connected devices please.
Download .Fit file and send to 4iiii.

Note: if you like, you can record Test Ride 1 & 2 together simultaneously using both your phone/4iii app and the cycling computer.

Test ride 3 – <15min steady state (no erg mode if riding indoors):

If the above rides were successful (no drop outs) then choose your preferred recording method (4iiii app or cycling computer) and pair your HRM. Ride on!