Update Sigma Software v2.27.18

We are glad to inform you that the Sigma team released new updates.
Qcom Tab:
Released Direct unlock feature for:
- Kyocera DuraForce XD
- Kyocera E6790TM
Android ADB Tab:
New MTK smartphones in the list:
- Lenovo c2 (k10a40) (MT6735)
- Bitel B9501 (MT6735)
ACTIVATIONS for SIGMA