Here’s what you need to download the official Coolpad 5855 firmware (stock ROM) flash file onto a computer. You can then flash the firmware file with the appropriate flashing tool.

Flashing tools were once used only by smartphone repair centers. Since then they have become available on the Web for anybody to use. They allow you to fix the same kinds of problems that were once left up to those repair centers: bootloops, soft-bricked devices, software errors, software bugs, update errors and so forth. And best of all, installing the Coolpad 5855 flash file is simple to do, thanks to the flashing tool’s easy to use interface that usually requires just one click.

Most third-party developers who create tools for helping you customize your devices—the teams that work on custom recovery images, rooting applications, et cetera—suggest sticking with custom software if you’ve already changed the system partition or installed a custom recovery. If you are to go back to stock Android, however, they also say it’s always to be done with flashing the firmware yourself instead of accepting the over-the-air updates. This is because OTAs can create unexpected behavior since they often just patch over existing software.

The flashing tools, such as the YGDP flash tool, are always just computer applications. On most occasions these apps are relatively small in file size, that won’t take up much hard drive space.

You can sometimes have a choice of what flashing tool you want to use to flash the Coolpad 5855 stock ROM. Firmware flashing is done with tools that work for either the system chip found in the device’s hardware or, on occasion, specifically made to work for a particular manufacturer.

What Is Android Firmware?

Firmware is the operating system and its applications that control how the smartphone or tablet that runs on Android operates. While you may see the words “software update available” on your device’s display, we call it firmware to highlight its close relationship with the device manufacturers hardware.

If you prefer technical jargon, firmware is the specific programming that gets written to a device’s non-volatile memory. The firmware gets added to the device during the manufacturing process and is the middleman in helping software run on the hardware. Firmware can be written as read-only memory (ROM), erasable programmable read-only memory (EPROM), or flash memory.

The Android operating system is more open than much of its competitors in iOS, Windows 10 Mobile, and Tizen. You always get firmware running on your device out of the box, but if you do not like it, you can swap it over with custom firmware or other firmware versions that were made for your device. This flexibility helps with troubleshooting, or if you know you would prefer a different Android version that was made available.

Why Reinstall Stock Firmware?

Did you think you may need to restore the stock firmware on your device? Here are some of the things that you can achieve with stock firmware files:

  • Upgrade or downgrade the version of Android on your device
  • Fix common mobile device-related problems, such as unbearable bugs in the software
  • Remove custom recovery images such as TWRP
  • Unroot the Android operating system, regardless of what method/tool you may have used to get root access
  • Unbrick your smartphone or tablet
  • Reinstall the operating system
  • Fix invalid IMEI problems

Coolpad 5855 Firmware Flash File Download Links

File Name: Coolpad_5855_042.042.P0.121108.5855

Android Version: Android 4.2 (Jelly Bean)

Firmware FileDownload flash file

How to Flash Coolpad 5855 Stock ROM Using YGDP Tool

1. Install the Android USB driver on your computer.

Note: You can install the Coolpad 5855 USB driver on the computer instead if the Android USB driver isn’t working during your time of visit.

2. Download the YGDP tool onto your computer and extract the file by right-clicking on it and then choosing the option for extracting it.

3. Download the Coolpad 5855 stock firmware package onto your computer and then extract it by right-clicking on it and then choosing the option to extract it from the menu.

4. Open the YGDP folder that you extracted and click on the YGDP executable file (.exe) to open the application.

5. Choose the user type and then click on the “Login” button. (Newer versions of the tool do not require a password. Older versions of the tool must enter “369” or “9527” to log in.)

6. Click on the “Configuration” button on the top left-hand corner of the YGDP interface.

7. Click on the small folder icon and browse the computer to upload the firmware file you wish to flash.

8. Click on the “Apply” button once you’ve selected the firmware.

9. Turn off the Android device. Connect your Android smartphone or tablet to the computer with its USB cable.

10. Click on the “Start” button.

For a more detailed guide complete with screenshots, you can check out the how to use the YGDP tool to flash CPB firmware article.

Important Notes

Back Up Your Data: You should always back up your data before you begin flashing new firmware files to your smartphone or tablet. All of your pictures, music, videos, documents, etc. should be still on your device after you have updated the firmware, but you may need to restore the contacts and applications from a backup. 

Wipe Cache and Factory Reset: Some people claim that taking a factory reset isn’t necessary after updates, but at the very least you should wipe the system cache after installing new firmware. This way you can help eliminate any performance issues and battery draining bugs. Taking a factory reset is the best way of avoiding common problems many users face after applying software updates. 

Additional Firmware

You can download Android ROMs for other Android devices if you have another smartphone or tablet from a different manufacturer.