Replace Modem Firmware On Lenovo S650, For Better Signal Reception

11 Feb 2015

Replace Modem Firmware On Lenovo S650, For Better Signal – When you changes a lot firmware on your Lenovo S650, update the ROM change from china firmware to international firmware sometimes you feel that your signal strength is decreased from one ROM to another ROM especially when your device is china devices and installed with international or europe firmware. This is because the modem file  or modem firmware or baseband is not fit with your ROM, the solution for this problem is we need to find or replace the modem file with the compatible ones.
Today guide will teach you step by step how to change or replace modem firmware for Lenovo S650, this guide is about to modified ROM system files so please be careful in following every step in this guide, and the most important is please make system backup first.

Disclaimer :
This guide for educational purpose only, We not responsible if your device bricked after following this tutorial. Even this guide is already tested but it has possibility to brick your phone, (DWYOR)

Replace Modem Firmware On Lenovo S650, For Better Signal

Requirements :

Downloads :
  • S650.V11 Modem use in china firmware S123 and Vibe
  • S650_ROW.V16 use in international or ROW firmware S112
  • S650_ROW.V17 use in international or ROW firmware S113
  • S650.V104 use in china firmware Vibe UI 1.5 or later
Replace Modem Firmware On Lenovo S650, For Better Signal Reception

  1. This guide will use TWRP custom recovery, but CWM also have the same menu as TWRP so you still can follow this guide using CWM custom recovery.
  2. Download the modem file you are going to flash on your device. Move or copy the modem files to your SD card root, don’t place it inside the folder.
  3. Turn off your device, press and hold Power button + Volume Up + Volume Down button and release until you can see TWRP main menu. This combination button will bring your device to boot on recovery mode.
  4. On the TWRP select Install ↦ Select Zip to Install navigate to your SD card where do you save the modem file and select it.
    Replace Modem Firmware On Lenovo S650, For Better Signal Reception
  5. When you already select it, just Swipe to Install. Installation progress will be show on the next windows, this installation only take 10-15 seconds. Select Reboot after finish install modem file.
  6. Boot normally and confirm with go to System Setting ↦ About Phone ↦ look on the Baseband Version make sure it same with the downloaded modem file.
  7. Done.
I hope this guide can help you resolve the signal reception on your Lenovo S650, if you got problems or found broken links regarding this guide please leave any comments. and thank you for visit.
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12 comments
  1. Hello, Andy.
    I'm still confuse what i have to choose one of them modem versions?
    I'm right now using ROW S308 (last update OTA)
    I wanna download but what modem which compatible with my Firmware?
    I have a big big problem with specially Signal of WiFi Receiver from Lenovo S650 (very weak than other device i have). Please repply. Regard. Dian

  2. Oke Andy, thanks for fast response.

    i've just install the "S650.V104 ↦ use in china firmware Vibe UI 1.5 or later"
    and succesfull, but then my IMEI lost.
    after that i can get back my IMEI and conneting again (my mobile GSM/3G/HSDPA is look GOOD or maybe better than before)
    but my question is My WiFi Signal (Lenovo S650) still so weak.

    Any solution or alternative, Andy?
    Please because i need this.

    1. Sorry for late answer, for wifi signal i cannot give suggestion because all i know modem is for signal gsm not for wifi, for wifi can you try another wifi or try another phone connect to your wifi? How about the signal same with you or not, because i never heard problem on wifi signal problem

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