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I was handed a phone from my friend who installed Firefox OS over Android, but now wants Android back. I know roughly how to flash ROMs, but am not sure how to go into download mode or equivalent in Firefox OS. Any help would be appreciated.

The model of the phone is a ZTE Kis. If I can supply any more information just ask!

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    This question appears to be off-topic because it is about Firefox OS which is outside the scope of this site. – t0mm13b Mar 2 '14 at 15:14
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    Since the OP is trying to put stock Android back on what was originally an Android phone I think this question is okay here. – ale Mar 2 '14 at 19:56
  • If you have any suggestions of where else to put it I would happily try there as well. – Bsalarius Mar 3 '14 at 17:12
  • Hmmm... ok, concise summary, get the stock firmware (read Android) from Zte's website, un-raring/unzipping the archive, then go into boot-loader mode and use fastboot to flash the stock firmware on it (read the image after extraction from the rar/zip) – t0mm13b Mar 3 '14 at 17:30
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Steps to Access Download Mode on ZTE Kis 3 Max

  1. Turn off the device
  2. Remove the memory card from the device
  3. Press and hold Volume Down key + Volume Up key simultaneously
  4. Press and hold Power key until the device completely freezes.

You can flash a ROM as usual after that. The stock ROM for your phone can be downloaded here.

Source

  • I have tried for some time now to get into download move with no success. I believe the phone itself is now stuck in a boot loop, as it will never get past the Firefox OS loading screen. Any suggestions? – Bsalarius Dec 4 '15 at 17:11
  • You might want to try this out. (Note that that is NOT for your exact phone model. Read the whole thing first. It may or may not work with your model.) In case that doesn't work, you could try browsing/asking a question on r/FirefoxOS. – AJDFHLOef Dec 7 '15 at 5:26
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Go to the Play Store and download and install a launcher e.g. Google Now Launcher. When you open the launcher it will give you options to select an interface you wish to use. Select a new one and your phone will exit the Firefox OS Launcher. Then if you'd like to permanently delete the Firefox OS Launcher go to Settings/Personal/Home and you'll find your launchers there. Hope this helps someone.

  • This does not answer the question. The Firefox OS is not a simple application - it's the whole Operating System. There is currently no android running on this device so you might want to edit your answer to actually adress this topic – benjamin Nov 17 '15 at 8:52
  • Read the question again. You'll notice that it is in fact a Firefox launcher running over android. I'm speaking from experience with the "OS". Search for it and try it then you'll understand. – Oogpister Nov 17 '15 at 8:58
  • You can read about it here: xda-developers.com/overlay-firefox-os-on-your-android-device – Oogpister Nov 17 '15 at 9:05
  • the article is from June 11, 2015. I question if the app was already available on March 2014 - the date the question was asked. The OP doesn't mention a laucher anywhere but speaks of a custom rom (the firefox OS one). So he wants to roll back to his stock rom which AJDFHLOef describes perfectly. – benjamin Nov 17 '15 at 12:18
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    As stated by @Oogpister, the device is not just running a launcher, but a whole OS. I have no access to Google Play through the device. – Bsalarius Dec 4 '15 at 17:13

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