Wi-Fi cannot turn on! Accidentally deleted /etc/wifi folder

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

/etc/wifi

/etc/dhcpcd

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.

tried:

• 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?