4G-IOT how to get & set factory calibrations?

eros

I tested provided Android 8.1 image but it needed format+download all. Then returned to provided Android 6 image (and format+download).
Android 8.1 is missing sounds and have older kernel.

Now android 6 is show only 3G network, wlan is not functional blank screen easilly, missing IMEI. How get + restore factory calibrations? What partition holds them?

Alijan

Extremely cost-effective for facilities with limited budgets, the 1811D is a practical solution for aviation schools, startup MROs, and general aviation maintenance providers who need reliable tools at a competitive price point.        pitot static test set calibration        Supports analog or digital instrument testing.