Default Bell HTC One 4.4.2 hboot 1.56


I would like to unroot my Bell HTC One from Bell.

I has stock ROM: KitKat 4.4.2
hboot 1.56
bootloader is unlocked

How do I unroot my device?

I'm used to unrooting on Samsung devices and returning back to stock, but I have no clue how to do it on the HTC One.

Please hit thanks if I help you. Thanks

Phone > Bell Samsung Galaxy S5 (SM-G900W8)
Memory > 32GB MicroSD + 32GB onboard = 64GB
ROM > Stock Touchwiz 4.4.2 (rooted)

Tablet > Bell Samsung Note 8.0 (SGH-I467M)
Memory > 32GB MicroSD + 16GB onboard = 48GB
ROM >Stock Touchwiz 4.4.2 (not rooted)