Just do a local update and backup your data if you think that's necessary. Shouldn't be a problem at all
I don't know about the branding, but if you're talking about carrier-bloatware, I don't think it will disappear, because a regular update keeps your app. If you're rooted, install RootAppDelete and delete those apps if you want. Hope I helped!
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-Huawei Ascend P6-U06, running Omni HYD52ROM v1
-Samsung Galaxy Tab 2 7" GT-P3110, running stock 4.2.2 Touchwiz
-Samsung Galaxy Ace s5830i, running Simplicity v5
( ^3^)O <(I'm always glad to help!!)