if you are rooted with SuperSU there is an option to unroot in settings somewhere.
You can use the Nexus 4 - Factory image restore thread. It is available as a sticky in this forum.
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Stupid easy with this:
Nexus Root Toolkit v1.7.2 | WugFresh
Look under advanced utilities. The hardest part is getting the ADB interface drivers sorted out, lol.
Sorry to be a bother, but have you tried this yourself? If so, everything worked fine?
if you are rooted with SuperSU there is an option to unroot in settings somewhere.
Is there a way to Unroot Koush's Superuser? I'd like to unroot before installing the latest OTA patch on top of 4.3.
Sorry for the late reply. Yes, the factory restore can relock the bootloader.
Regarding other suggestions for the tool kit, I've not used the Wugfresh toolkit, but it should be risk free. Or you can try Nexus 4 Root Toolkit by XDA Admin Mark Skippen. Super easy and risk free. I can vouch for that.
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Is there a way to Unroot Koush's Superuser? I'd like to unroot before installing the latest OTA patch on top of 4.3.
Flashing factory images alone does not relock the bootloader, you have to do it manually after flashing the images.
No need to unroot and then update as you will lose root when you update anyway.
How would I manually relock the bootloader?