i was trying to enable ad hoc network connection on android and overwriting below folders



and now my wifi could not turn on. The phone is ADINNO R8, a custom build phone.I could not find its ROM on the internet and most of software does not recognize it.

it runs on 4.2.1 Jelly bean.


  • USB internet

USB internet to upgrade firmware within OS(seems to use wifi driver as well which are corrupted, so there is no internet connection)

  • 3rd party fixer

download WiFi fixer and not working

  • other version/wifi folders

downloaded some WiFi folders people upload on the internet and none of them are working.(maybe because this is a rare custom phone)

  • Recovery

tried recovery and wipe all data in setting, still no luck, wifi folder still corrupted.

i could think of three methods, both failed.

  1. reflash its OS.(failed as could not find its ROM)
  2. upgrade its OS.(failed as no internet access, WiFi not working)
  3. Replace /etc/wifi found on internet (failed as no compatible version)

is there anyway i could fix it?

  • Is there an upgrade waiting to be installed even? – ce4 Dec 5 '14 at 14:49

Try harder to find firmware images for your phone. A factory reset might not work, as it only wipes data and cache partition. The etc folder is in /system/etc, /etc usually just is a link to /system/etc. Therefore you would need an image of the system partiton. Well, if you can't find such firmware, it might not be a device thats common used, and therefore - if you are lucky - there was not a lot of money around for software adaptations from the manufacturor. Try to get firmware for similar devices, watch out for the same android version, and second on similar hardware / components. Download these images, unpack them and try to find the needed files. Maybe you can just grab another device, from a friend or so, and look for the files. You might also consider having a look on aosp and taking the files from there. Watch out for the correct android version.

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  • Thanks for commenting. However, as Armando Gonzalez said, there is really not much information for the mentioned phone model...and it consist of 7 hardware button and 3 touch screen buttons. It's really hard really hard to find similar firmware as well... I will keep trying though. – Bu Wenliang Nov 29 '14 at 17:05
  • As harder it is to find it, as closer it might be to the official aosp, Android OpenSource Project. The source can also easily be searched on androidxref.com. good luck. – user3387542 Nov 29 '14 at 18:50

Attempt to do a Factory Reset through Settings. I deleted a system file once and it ended up fixing it although my new experience with Android says it might not work. I couldn't find anything online relating to your phone besides reviews, tests, and things along those lines. You are sort of in a pickle here. I'll try to search more for ya.

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  • 1
    Thanks for the searching... tried factory reset through setting. only deleted my user data...Wifi still not fix. – Bu Wenliang Nov 29 '14 at 3:56
  • @BuWenliang same here ;-( – user3758898 Sep 5 '15 at 20:47

Is there an upgrade waiting to be installed even?

I have 2 ideas:

A: Use bluetooth tethering to your phone to get network access

B: You could install some basic commandline tools (eg. ssh server / socat / brctl / etc) from http://dan.drown.org/android/ and try to get a working connection via Android-Debug-Bridge's integrated portforwarding feature (maybe setting a proxy to this port works)

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  • Thanks for the effort. I tried using inserting a SIM card. There is no update available. – Bu Wenliang Dec 8 '14 at 2:50

Contact someone from the review of this phone and ask him if he can do a /system/etc backup and upload it to the internet.Than just restore it.

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  • This is really a comment, not an answer. With a bit more rep, you will be able to post comments. – Firelord Jul 5 '15 at 8:38
  • I'm sorry but i don't have that many reputation, cause i just registered so it would be helpful if someone helps me get it not down voting cause I can't comment. – Nik Rozman Jul 5 '15 at 13:44
  • Please understand you cannot or are not supposed to subvert the rules. The reputation needed to comment is only 50+ which can be gained by posting one or two high-quality answers (+10 for upvote, +15 if accepted), or post good quality questions (+5 on each). I've told you on your other posts, so as one other user, to not to post answers in such way. I hope would understand, and I'm looking forward for some good answers from you. See you soon! :) – Firelord Jul 5 '15 at 13:49

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