Unable to get OTA update

Hi,
Got consumer cellular XT1064 and upgraded to lollipop last year. But I am not able to get OTA since then.
Baseband: MSM8626BP_1032.3105.93.00R CCAWS_CUST
Android Version:5.0.1
Kernel: 3.4.42-gb44b5b3
hudsoncm@lclbld27 #1
System Version: 22.21.25.titan_retuaws.retuaws.en.US cc
Build #: LXB22.46-25

How do I upgrade to the latest lollipop version? Please advise.