Entrust root cert validation on Windows Mobile 5.2

We are still using some Intermec/Honeywell 3K3X devices running Windows Mobile 5.2 that we'll be retiring later this year. Before that, however, we have a need to deploy the Entrust Root Certification Authority (G2) root and intermediate certs. I know how to deploy these, but I want to validate that they are working. Entrust offers a validation site (https://validg2.entrust.net/), but the site won't work in the IE version on the device. Further, I have yet to find a browser that will both load the site and that uses the device's cert store and not a separate one for the browser. Does anyone know of:- a browser that works with WinMo 5.2 AND supports HTML5 AND uses the device's browser store- some other way to validate the certI happened across this article - https://support.nmi.com/hc/en-gb/articles/360021544791-How-to-Check-If-the-Correct-Certificates-Are-Installed-on-Linux - which made me realize I could use cURL to validate, but I have yet to be able to find a cURL implementation for Windows Mobile. Any help you can offer is appricated.