Unfortunately there is no specific process available online that gives a step by step process on how to reinstall and format nokia N82. Due to this I advise you to access the support service Nokia have on their website which can be found at www.nokiausa.com/get-support-and-software/product-support In addition, you may also want to consider calling the support line as this may be a quicker response as you should be talking to someone there and then.
- How to unlock a Nokia N82?
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- Step 3