Xiaomi Redmi Y1 Lite Firmware & Flashing Guide

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The Xiaomi Redmi Y1 Lite (codename ugglite), launched in late 2017, was an entry-level smartphone designed for users who prioritize a large display and a long-lasting battery. As a more affordable version of the Redmi Y1, it featured a **5.5-inch HD display** and was powered by the **Qualcomm Snapdragon 425** chipset. The device was particularly popular for its dedicated microSD card slot and dual SIM support, making it a reliable daily driver for budget-conscious users.
For many users, flashing new firmware is an essential part of maintaining or customizing their device. Common reasons include fixing software glitches, upgrading to a newer version of MIUI, or resolving issues like a boot loop or system instability. This comprehensive guide provides all the necessary files, tools, and step-by-step instructions to ensure you can confidently restore or upgrade your device.
This article serves as a complete reference guide:
  • ✔ Official stock ROM download links
  • ✔ Required tools, drivers, and preparations
  • ✔ Step-by-step flashing tutorials (Fastboot & Recovery)
  • ✔ Common FAQs and troubleshooting solutions


Why You Might Need to Flash Your Redmi Y1 Lite
Flashing new firmware is often a solution for specific issues faced by users of the Redmi Y1 Lite:
  • Fix Boot Loops or Bricks → If your device gets stuck on the MI logo after a failed update or custom ROM install, flashing the stock Fastboot ROM is the primary method to unbrick it.
  • Resolve System Performance Issues → Over time, an old OS can become slow or buggy. A clean firmware installation can resolve system lag, app crashes, and other software glitches, making the phone feel new again.
  • Update to the Latest MIUI Version → If your device is not receiving OTA updates, you can manually flash a newer Fastboot ROM to get the latest features and security patches.
  • Return to Stock Firmware → Before selling the device or sending it for repair, flashing the official stock ROM ensures the phone is in its original state, which is often a requirement for warranty claims.


Quick Device Overview (Codename: ugglite)
  • Model: Xiaomi Redmi Y1 Lite
  • Release Year: 2017
  • Chipset: Qualcomm Snapdragon 425
  • Display: 5.5” HD IPS LCD (1280 x 720)
  • Battery: 3080 mAh non-removable
  • OS at Launch: MIUI 9 on Android 7.1 Nougat
  • Latest Official OS: MIUI 11 on Android 7.1 Nougat
  • Codename: ugglite
🔑 Always verify your device codename is ugglite before flashing. Installing the wrong firmware will permanently brick the device.


Required Tools & Downloads
Before flashing, make sure you have the following:
Tool / FilePurposeDownload Link
Mi Flash ToolUsed for flashing official Fastboot ROMsDownload Latest Version
Xiaomi USB DriversEnsures your PC detects the device in Fastboot modeDriver Pack
Mi Unlock ToolNeeded to unlock bootloaderOfficial Unlock Tool
Official Fastboot ROMsStock firmware for unbrick/restore


Flashing Methods
Method 1: Flashing Stock ROM (Fastboot Mode)

Use this method if your device is bricked, stuck in a boot loop, or you need to perform a clean install.
  1. Unlock Bootloader via the Mi Unlock Tool (mandatory).
  2. Boot into Fastboot Mode → Hold Power + Volume Down.
  3. Extract the TGZ file of the stock firmware on your PC.
  4. Open Mi Flash Tool, click Select, and choose the extracted firmware folder.
  5. Connect your device to your PC → Click Refresh to detect it.
  6. Choose the “clean all” option at the bottom. This will wipe all data.
  7. Click Flash. Wait until the tool displays a success message.
➡ The device will reboot into the official stock MIUI ROM.


Method 2: Flashing with Recovery ROM
Best for users who want to update their phone without a PC, or if a minor glitch occurs after an OTA update. This requires the device to be working.
  1. Download the Recovery ROM (.zip file) to your phone's internal storage.
  2. Go to Settings > About phone > MIUI version.
  3. Tap the MIUI logo multiple times until "Additional update features are on" appears.
  4. Tap the **three dots** in the top right corner and select "Choose update package."
  5. Select the downloaded Recovery ROM file.
  6. Confirm the installation. The device will reboot and install the update.
➡ Your device will boot into the updated MIUI version.


FAQs
Q1: Will flashing a new ROM delete my data?

Yes, using the "clean all" option in Mi Flash Tool will wipe all data, including apps, photos, and settings. Back up your data before proceeding.
Q2: Why is the latest Android version on my device still Android 7.1?

The Redmi Y1 Lite officially received its final major MIUI and Android version with MIUI 11 based on Android 7.1 Nougat. There will be no official updates to a newer Android version.
Q3: My device is stuck in a boot loop after flashing. What should I do?

Re-enter Fastboot mode and re-flash the stock firmware using the Mi Flash Tool. Ensure you selected the "clean all" option.
Q4: Why can't I downgrade to an older ROM?

Xiaomi's anti-rollback protection may prevent you from flashing a ROM with an older anti-rollback index. This is a common issue when attempting to downgrade firmware.


Troubleshooting & Common Errors
  • Mi Flash Tool "cannot read from port" → Ensure you have correctly installed the Xiaomi USB drivers on your PC. Try a different USB cable or port.
  • Flash fails with "Missmatching images and device" → This error indicates you are trying to flash a ROM for a different device. Double-check your device codename (ugglite) and the firmware file.
  • Stuck in Fastboot mode → Force reboot the device by holding the Power button for about 10 seconds.
 
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