Flare S4 can't detect certain Wi-Fi networks after factory reset [Help]

[rejaverion]

So recently I decided to reset my unrooted Flare S4 Lite which is running on lollipop (reason: USB computer connection settings malfunctioning). After setting everything up, napansin ko na hindi nadedetect ng phone yung WiFi ko, pero weird enough, yung mga network ng mga kapit bahay nadedetect naman. It turns out, lahat ng saved networks ko before ako mag factory reset ay HINDI NA NADEDETECT, including yung WiFi sa school, sa church, etc. So I thought yung phone ko yung problema, hindi yung router ko (connected yung ibang device sa bahay sa WiFi ko).

Here's everything I've done so far in attempting a fix:

1. Restart router (multiple times)
2. Reset router
3. Change router settings (wireless mode, SSID broadcast, SSID itself, security mode, encryption, PSK, WiFi channel, WPS)

4. Reset the phone (again)
5. WPS
6. toying around with wi-fi settings, turning hotspot on and off
7. manually connecting to/adding network (entering SSID and PSK manually)
8. reboot phone (multiple times)

Pangatlong araw na ngayon hindi pa din nadedetect lahat ng saved networks ko dati bago ako magfactory reset.

I hope someone here has a solution. Ni-rereject sa international forums yung query ko dahil "clone" daw yung device ko. Thanks in advance.


UPDATE: The problem just got fixed--miraculously. Butstill I'd like to hear a concrete solution for future reference.

 

[majikagun]

na try mo na bang manual ilagay yung ssid ng wifi & password ?

 

[SlytherTrades]

Try mo boss i-format and flash sigurado swak yan dun!

 

[rejaverion]

na try mo na bang manual ilagay yung ssid ng wifi & password ?

Opo sir, several times.

Try mo boss i-format and flash sigurado swak yan dun!

Can you please elaborate boss?