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I rooted my Samsung Galaxy Grand 2 (SM-G7102) and it was successful. But ever since then the Engineering mode has been missing on my Android phone. I have tried the factory reset and yet the same result. I can't update my Android software, how do I solve this problem?

Izzy
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Ishola Hakeem
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  • What do you mean by "missing"? What exactly happens when you try to reboot into recovery mode? – Chahk Jun 30 '15 at 12:38
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    @Izzy Not sure but I think OP meant "Engineer mode". In my Mediatek device I can access two kind of Engineer mode, 1) *#*#4636#*#* (available for most of the phones, name -> "Testing", activity-> com.android.settings/.TestingSettings); 2) name-> "EngineerMode", activity-> com.mediatek.engineermode/.EngineerMode, available for Mediatek devices usually. // Let's see which one is the case for OP. Could be a third case too. :) And based on the tag, may be OP is running stock 4.3 JB. – Firelord Jun 30 '15 at 14:52
  • Good points, @Firelord – I have no MTK device, but now that you've mention it I rawly remember having read that before. And you're most likely correct with the tag :) So let's wait for the OP to clarify. – Izzy Jun 30 '15 at 14:56
  • When I reboot in recovery my phone would turn off and won't on for 1hr and my play store is not working anymore . – Ishola Hakeem Aug 10 '15 at 09:57
  • @firelord I'm not sure I have two engineering modes and I tried different test mode and MTK app as well. – Ishola Hakeem Aug 10 '15 at 10:01
  • Enable USB debugging, setup [tag:adb] in PC, and enter this command: am start -n com.android.settings/.TestingSettings and tell us the result. Similarly, try am start -n com.mediatek.engineermode/.EngineerMode, but I haven't checked whether your device is an MTK device or not. – Firelord Aug 10 '15 at 10:09
  • How do I install adb on my windows 8.1 – Ishola Hakeem Aug 10 '15 at 16:34
  • @firelord how do i install adb on my windows 8.1 – Ishola Hakeem Aug 13 '15 at 15:18
  • I don't have Windows 8 installed, so can't be of much help. Have you looked at Is there a minimal installation of ADB? – Firelord Aug 13 '15 at 16:37
  • @firelord no I don't think so – Ishola Hakeem Aug 15 '15 at 11:20

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