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The phone is a Hero H2000 dual sim with Android v2.2.1, MTK Platform

I get an Invalid IMEI error after a factory reset. How can I fix this?

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There are several possibilities. The first starts with checking the "Related" section to the right of this page, which gives you some good candidates which already contain answers/solutions, e.g.:

Next, there are some video tutorials on Youtube on this topic, e.g.:

My short Google Search also found some forum threads providing hints and solutions, e.g.:

I couldn't verify any of the mentioned solutions myself (luckily, I've never been affected by this problem) -- but I hope at least one of them will prove helpful to you.

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  • I lost my IMEI today. Searched Google and android.stackexchange.com for solutions, but could not find any. I have a Samsung Galaxy S4 I9505. Could you help me? Thanks!
    – Thomas Vos
    Jun 28, 2015 at 13:37
  • @SuperThomasLab I have no Samsung device, so I'm the wrong person to guide you step-by-step. I only know with Sammies it has to do with the /efs partition usually.
    – Izzy
    Jun 28, 2015 at 13:40
  • I already restored the /efs partition, but it didn't work for me.
    – Thomas Vos
    Jun 28, 2015 at 13:42
  • No more ideas then from my end. Maybe you open a new question (include a reference to this one to avoid someone counting it as "duplicate") with details what you've already tried, to attract those who might be able to assist?
    – Izzy
    Jun 28, 2015 at 13:43
  • I posted a question here: android.stackexchange.com/questions/113667/…
    – Thomas Vos
    Jun 28, 2015 at 14:16

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