Download Letv LE S3 X622 official stock firmware from the link here, and follow the provided flashing instructions to learn how to flash the stock rom.
Device Key Features
Brand – LeEco
Model -Le S3 Helio X20
Device Type – Android Smartphone
CPU – Deca-Core 2x 2.3 GHz ARM Cortex-A72 + 4x 2.0 GHz ARM Cortex-A53 + 4x 1.4 GHz ARM Cortex-A53
Chipset – MediaTek Helio X20 MT6797
GPU – ARM Mali-T880 MP4, 700 MHz, 4-Core
Camera -16 Megapixels with Dual-LED and AF Rear Camera | 8 Megapixel Front camera
Memory – RAM- 3GB | ROM 32GB External Memory Not Supports
Display – Screen size 5.5 inches FHD (1080×1920 Pixels)
Battery – Non-Removable 3,000 mAh Lithium-Polymer
SIM – Dual SIM (Nano + Nano)
Sensors -Proximity Sensor, Accelerometer, Compass, Ambient Light, Gyro, Fingerprint, Hall Effect
Color – Silver, Rose-Gold, Gold
Operating System – Android 6.0 Marshmallow with EUI 5.8
If you notice that any of the links provided below is broken or doesn’t work, please post in comments section so we fix and update it ASAP.
File Name: FULL_S2_PLUS_S2_PLUS-CN-FN-HEXCNFN5902303291S-5.9.023S.zip
Size: 1.84 GB
Android version: 6.0
Firmware – Download
How to flash
Step 1: Rename the downloaded zip file to update.zip, and copy it to the root directory of your Device Internal storage.
Step 2: Open the Phone “File Manager” and click the firmware “update.zip” to upgrade Phone firmware.
Step 3: Select “Update” option on the next screen.
Step 1: Download and rename file to update.zip
Step 2: Copy to the root of your internal storage
Step 3: Reboot to recovery mode
Step 4: Select install update from sdcard
Step 5: Wait for the flashing process to complete
Step 6: Reboot phone normally. Done!