The Advan i55D is a 5.5-inch 4G LTE smartphone released around 2018. It is a distinct model from the earlier Advan i55, featuring a Spreadtrum/UNISOC SC9850 chipset and running on Android 7.0 Nougat. The device was released in two main variants: one with 1GB of RAM and 8GB of storage, and another with 2GB of RAM and 16GB of storage. This guide provides the official stock firmware for both versions.
This firmware comes in the .cpb format, which requires the YGDP Tool for flashing. This process is the correct solution for fixing a bricked phone (mati total), resolving a bootloop, or performing a clean installation to remove software errors.
Disclaimer: Flashing this firmware will completely erase all data from your phone’s internal storage, including your apps, contacts, and photos. Ensure you have a backup of important files before proceeding.
Quick Device Specs
- Device: Advan i55D
- Release year: 2018
- Chipset: Spreadtrum/UNISOC SC9850
- Display: 5.5″ IPS LCD, 720 x 1280 pixels
- RAM/Storage Variants: 1GB/8GB and 2GB/16GB
- Battery: 2400 mAh
- Original OS: Android 7.0 (Nougat)
Required Downloads
To flash this .cpb firmware, you will need the YGDP Tool and the correct Spreadtrum/UNISOC USB drivers. These drivers are essential for your computer to recognize the phone in flashing mode.
- The correct firmware package for your RAM variant from the table below
- YGDP Tool
- Spreadtrum/UNISOC SCI USB Drivers
Official Stock Firmware (ROM)
Important: You must download and flash the firmware version that corresponds to your phone’s RAM and storage capacity. Flashing the wrong version can cause boot issues or brick the device.
| RAM / Storage Variant | Android Version | Type | Download |
|---|---|---|---|
| 2GB / 16GB | 7.0 Nougat | Stock ROM (.cpb File) | Download |
| 1GB / 8GB | 7.0 Nougat | Stock ROM (.cpb File) | Download |
How to Flash Stock Firmware
To restore your Advan i55D, you must use the YGDP Tool. First, install the Spreadtrum drivers. Open the YGDP Tool, enter the password (e.g., ‘9527’ or ‘369’), and load the .cpb firmware file using the “Config” menu. Click “Start,” power off your phone, then press and hold the Volume Down key while connecting it to your PC to begin the flashing process.
For a complete, step-by-step walkthrough of this flashing method, please refer to our detailed pillar guide: How to Use YGDP Tool to Flash CPB Firmware.
Device-Specific Troubleshooting for Advan i55D
- CRITICAL – Not for Advan i55: The Advan i55D (Spreadtrum chip) and the original Advan i55 (MediaTek chip) are different phones. This firmware is ONLY for the i55D and will not work on the older i55 model.
- Flash the Correct RAM Variant: Ensure you use the firmware that matches your phone’s hardware (1GB or 2GB RAM). Flashing the wrong version will likely lead to a boot failure. If you are unsure, you can try the 1GB version first.
- YGDP Tool Not Detecting Device: This is a driver issue. Ensure the Spreadtrum SCI drivers are installed correctly and that your PC recognizes the device when you connect it in flash mode.
- YGDP Tool Password: The flashing tool is password-protected. The most common default passwords are 9527 or 369.
FAQs
- Q1. My Advan i55D is dead. Will this fix it?
- Yes, if the cause is a software brick, this firmware and the YGDP tool are the correct procedure for unbricking it.
- Q2. What is a
.cpbfile? - A
.cpbfile is a specific type of compressed firmware package used for some UNISOC/Spreadtrum devices, which requires the YGDP Tool to be installed. - Q3. How do I know which RAM version I have if my phone is bricked?
- This can be difficult. Often the RAM/Storage configuration is printed on the original box or on a sticker in the battery compartment. If you cannot find this information, your best bet is to try flashing the more common variant (often the lower-spec one) first. The tool may give an error if it’s incompatible.
- Q4. Will I lose my data by flashing this firmware?
- Yes, this process completely erases the phone’s internal storage.
