Downgrading B315s-936 From 21.313 Firmware Version | No Need Mag-USB Mode

Requirements:
1. PuTTY or cmd ng windows
2. E5186 Toolbox
3. Multicast Upgrade Tool

Firmware list:
Choose kung anung gamit niyo ngayon at gustong ipalit.
From South Africa Telkom to Polkomtel
From South Africa Telkom to Zain
From Middle East(21.313) to Polkomtel
From Middle East(21.313) to Zain

More firmwares:
Zain to Polkomtel
Polkomtel to Zain
Middle East(21.300) to Polkomtel
Globe to Universal(21.313)
Globe to Play
Globe to Polkomtel
Globe to South Africa Telkom
Polkomtel 21.316 to South Africa Telkom 21.313
Globe 21.300 to Polkom 21.316

Procedure:
1. Connect 936 sa LAN, Open E5186 Toolbox, enter admin password, Connect. Huwag i-click ang GET. See SS.

2. Confirm if OK ang response and Exit.

3. Open PuTTY, type IP, select Telnet, Click Open or See the screenshot. Pwede rin, open cmd, type telnet 192.168.8.1

4. Type ati to confirm na connected tayo sa modem at ung commands sa baba.
at^sfm=1
at^reset

5. Unplug power adapter ng modem.

6. Set static IP.

7. Open Multicast Upgrade Tool, Select Network Card, piliin kung anong firmware ang gamit niyo sa modem at kung ano gustong ipalit, click Start.

8. Plug power adapter ng modem, wait mapunta sa USB Mode(Green), Tanggalin ang LAN at isaksak ang male to male USB Cord, modem at PC. Alams na.
Open CID Reader, DC Unlocker, etc. I'm sure meron kayo niyan at kung panu paganahin.
Enter commands:
at^sfm=0
at^reset

9. Remove USB Cord, Remove static IP sa LAN at iset sa Obtain automatically.
Open browser(incognito mode), type 192.168.8.1, login, hanapin ang Restore Defaults, click OK, wait mag-reboot ang modem.

10. Boom! 

== EXTRAS ==

Change DNS

Credit kay sir mulot and freddy3k sa AT Commands
Soure smyb: