Polytron R2457 Rocket S2 Firmware

The specific Polytron R2457 Rocket S2 Firmware comes with a Stock ROM of Polytron R2457 Rocket S2. This helps you to bypass FRP lock and revert from the root and custom ROM.

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How To Flash Polytron R2457 Rocket S2 Stock ROM:

There are various reasons to flash (Firmware on Polytron R2457 Rocket S2).

For example, your phone will be stuck or hang on the logo. You want to remove the FRP lock from it. If you’re going to hard reset your phone and cannot access the recovery menu. But most of the problems and benefits that cause flashing stock ROM are below.

The Benefit Of Polytron R2457 Rocket S2 Firmware:

  • Flash Stock ROM to unbrick your Polytron R2457 Rocket S2
  • Update and downgrade
  • Unroot or fix bugs on the phone
  • To solve the lag or stutter
  • By flashing Stock ROM, you can fix software issues.
  • Revert to stock to get your warranty
  • Keeps rebooting issue
  • If your phone boots straight into recovery
  • Phone boots straight into its bootloader

Requirements To Flash Polytron R2457 Rocket S2 Stock ROM:

  • Charge your mobile: Your phone may no less than a half charge.
  • Laptop or PC: To execute this installation, you must use a PC or Laptop.
  • 1. Take Polytron R2457 Rocket S2 Full Backup

Before going to install Polytron R2457 Rocket S2 stock ROM you need to take a backup of all your messages, photos, and apps from your smartphone.

Most smartphones automatically make a backup in the background. But to make sure you take everything to your new device, you need a full backup.

How To Backup Android Phone Before Flashing Stock Firmware

  • 2. Download Polytron R2457 Rocket S2 Flash Tool And Drivers:

These drivers are mainly for the devices powered by the SPD chipset. With these drivers, you can transfer files, flash the firmware files on the device, etc.

  • B. We use the Spreadtrum flash tool for as Polytron R2457 Rocket S2 Flash Tool because of this tool is very efficient and support all kind of SPD phones.

Instructions to Flash Polytron R2457 Rocket S2 Stock ROM:

1: Download and install SPreadtrum USB Driver on your computer.

2: Download the Polytron R2457 Rocket S2 flash file.

3: Extract Spreadtrum Upgrade Tool on your computer.

4: Now open Spreadtrum Upgrade Tool .exe.

5: Once SPreadtrum Upgrade Tool is Launched, Connect your device to the computer (Make sure your device is switched off).

6: Once your Smartphone is connected successfully to the computer, click on the Load Packed Button and add the Polytron R2457 Rocket S2 ROM file. (having .pac extension)

7: Once you have successfully added the. Pac file in SPD Upgrade Tool, click on the Start Downloading button to begin the flashing process.

8: Wait for 2 – 10 minutes, as the device is in the flashing process.

9: During the flashing process, your device will restart automatically. Once flashing is completed, you will be able to see the Green Passed Message in SPD Upgrade Tool.

10: Close the SPD Tool on your computer and disconnect your Android Smartphone from the computer.

  • Congratulations, You have successfully installed Polytron R2457 Rocket S2 Stock ROM using the SPD Flash tool.

Follow Detailed Instruction To Flash Firmware With SPD Flash Tool.


  • Please read and understand the Full Guide before flashing “Polytron R2457 Rocket S2 Firmware”.
  • Use these instructions at your own risk. We will not be responsible for everything that happens to your device, resulting from the use of information in this guide.
  • Before flashing, Stock ROM on Polytron R2457 Rocket S2 must have a 70–80% charge.

Bin Packet load Error When Flashing “Polytron R2457 Rocket S2 Stock Firmware File”: If you ever got Bin Packet Error then simply download and try flashing the firmware with this version of SPD Upgrade Tool.

How to Write IMEI After Flashing Polytron R2457 Rocket S2 Stock Firmware File: After flashing the stock firmware on Spreadtrum Device, you may need to flash the IMEI also, for that use WriteIMEI on Spreadtrum Devices.

Polytron R2457 Rocket S2 Firmware Details:


Gapps: Included No Root
Device Supported: Polytron R2457 Rocket S2 No Twrp And Nand Backup
Tool Supported: SPD Flash Tool No Customization And Over cloaking
Soc: SP7731 No ADB Ad Block
Os: Android 5 Lollipop Pre-installed OEM apps

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Download Polytron_R2457_Rocket_S2_SP7731_V10_20160314_5.1_SPD
Always had a strong interest in the Android operating system. Experience with Git and self-hosted WordPress blogs led him to the understanding that an online presence was the logical next step for his business. It's about uniqueness and individuality!