Model: Vivo 1801
Also known as: Vivo Y91 / Y91i (MediaTek variant)
Tool used: UMT (Ultimate Multi Tool) – MTK Module
| Item | Details | |------|---------| | Model | Vivo 1801 (PD1801) | | CPU | MT6762 / Helio P22 | | Tool | UMTv2 / UMT Pro (with latest software version) | | Flash File | Vivo 1801 MT6762 Scatter-based firmware (Pac or OFP converted to scatter) | | Driver | MTK USB VCOM drivers + UMT drivers | | Format | Sparsechunk / system.img (scatter loading) |
🔔 Note: Vivo 1801 does NOT support direct SP Flash Tool without authentication. UMT bypasses this via BootROM exploit.
The Vivo 1801 (also known as Vivo Y91/Y91i) is a popular budget device powered by the MediaTek MT6762 processor. This paper outlines the procedure to flash stock firmware (Flash File) on a bricked, locked, or dead Vivo 1801 using the UMT (Universal Mobile Tool) Dongle via SPD/MediaTek Smart Phone Flash Tool interface. It includes prerequisites, firmware details, flashing steps, and troubleshooting common errors.
| Error Message | Cause | Solution |
|---------------|-------|----------|
| S_BROM_CMD_START_CMD_FAIL | Driver/Port issue | Reinstall VCOM drivers, change USB port |
| S_DA_SOC_CHECK_FAIL | Wrong DA | Use MTK_AllInOne_DA from UMT folder |
| Status: 0xC0060005 | Battery low | Connect with battery bypass (remove battery, use USB power) |
| Status: 0xC0020001 | Auth file missing | Disable authentication in UMT (if supported) or use signed DA |
| Flashing stuck at 100% | Userdata error | Uncheck userdata partition and reflash |
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The Go to product viewer dialog for this item. , commercially known as the Go to product viewer dialog for this item.
(or Y71i), is a Qualcomm-based smartphone released in 2018. Repairing or software-servicing this device using the Ultimate Multi Tool (UMT) dongle—specifically the QcFire module—requires specific firmware files and hardware procedures to interact with the device's Qualcomm Snapdragon 425 chipset. Core Technical Specifications Model Identification: Chipset: Qualcomm Snapdragon 425 (MSM8917).
Operating System: Originally launched with Android 8.1 Oreo (Funtouch OS 4.0).
Flashing Interface: Qualcomm HS-USB QDLoader 9008 (EDL Mode). Required Software & Files
To perform a complete flash using UMT, you must have the following components:
UMT Dongle & QcFire Module: The primary hardware and software interface for Qualcomm devices.
Flash File (Firmware): For UMT, you need a "Flat Build" firmware, typically containing: Programmer File: e.g., prog_emmc_firehose_8917.mbn.
XML Files: rawprogram0.xml and patch0.xml which map the data to the device partitions.
Qualcomm USB Drivers: Necessary for the PC to recognize the device in Emergency Download (EDL) mode. Flashing Procedure with UMT QcFire
The process involves moving the device from a standard state to a specialized service mode. Enter EDL Mode (Test Point Method):Because the
often has a locked bootloader, you must use hardware test points to trigger EDL mode. Power off the device and remove the back cover.
Locate the two specific EDL test points on the motherboard (often near the battery connector).
Short these two points using tweezers while simultaneously connecting the USB cable to the PC.
Verify recognition in Windows Device Manager under "Ports (COM & LPT)" as Qualcomm HS-USB QDLoader 9008. Configure UMT QcFire: Open the QcFire module and navigate to the Flasher tab. Select Single Program mode.
In the "Program" field, browse to your firmware folder and select the rawprogram0.xml file. The patch0.xml should load automatically. Execution: Click the Flash button.
The tool will communicate via the Firehose programmer to erase and rewrite partitions.
Once the log displays "Operation Finished," disconnect the battery, reconnect it, and power on the device.
, commonly known as the , is a mid-range smartphone released in 2018. In the mobile repair community, it is often discussed in the context of fixing software issues like "Hang on Logo," "Dead Boot," or "Forgot Password" using tools like Ultimate Multi Tool Key Details for Flashing with UMT Model Identification corresponds to the firmware build : Flashing this device typically requires entering EDL (Emergency Download) Mode
. This often involves using a "Test Point" (shorting two pins on the motherboard) to allow the computer to recognize the device as a Qualcomm Snapdragon interface. UMT QC Fire Vivo 1801 Flash File Umt
module is the standard choice for this Qualcomm-based device.
: Official updates and "Stock ROMs" are used to restore the phone to its original factory state, often resolving boot loops or system errors. Common Use Cases Dead Boot Repair
: Fixing phones that won't turn on after a failed update or software corruption. : Removing screen locks or bypass FRP (Factory Reset Protection) if the Google account credentials are lost. IMEI Repair
: Restoring lost or "null" IMEI numbers after deep software manipulation.
You can find official system update packages directly on the Vivo India Support Page diagrams or a link to a tested flash file for this model?
The Vivo 1801, commonly known as the Vivo Y71, is a Qualcomm-based smartphone often serviced using the Ultimate Multi Tool (UMT) dongle. Flashing this device is typically done to resolve issues like being "hang on logo," forgotten screen locks, or "dead boot" scenarios. Core Flashing Requirements
To flash a Vivo 1801 using UMT, you generally need the following: UMT Dongle: Specifically the QC Fire (Qualcomm) module.
Stock Firmware: The correct "Flash File" for the Vivo Y71 (often labeled with model code PD1731F).
Qualcomm USB Drivers: To ensure the PC recognizes the device in EDL Mode.
EDL Test Points: Since this device usually requires Emergency Download (EDL) Mode for deep flashing, you must open the back cover and short two specific gold pins (test points) while connecting the USB cable. General Flashing Procedure
While exact steps may vary by tool version, the standard workflow on UMT QC Fire includes: Launch QC Fire: Open the UMT Qualcomm module on your PC.
Select Firmware: Navigate to the "Flash" tab and load the rawprogram0.xml and patch0.xml files from your extracted firmware folder.
Connect in EDL Mode: Power off the phone, short the EDL Test Points, and connect it to the PC. Check Device Manager to ensure it appears as "Qualcomm HS-USB QDLoader 9008."
Execute Flash: Click the Flash button in UMT. The tool will verify the partition table and begin writing the system files.
Reboot: Once the process is finished (marked as "Flash Done"), disconnect the battery briefly, reconnect it, and power on the device. Common Troubleshooting
IMEI Issues: Some users report Invalid IMEI or Baseband issues after a full reset or flash. This often requires a specialized "Repair" or "Restore Factory" step within the UMT tool or using a specific QCN file.
Version Constraints: Vivo devices with Android 8.0 or higher often have "Anti-Rollback" protections, meaning you generally cannot flash an older firmware version than what is currently installed.
Official Support: For standard software updates that don't involve hardware bypasses, users can find official upgrade packages directly from Vivo.
In the world of mobile repair, the story of the (commonly known as the Go to product viewer dialog for this item.
) often begins with a "dead" screen or a stubborn pattern lock. For technicians, the UMT (Ultimate Multi Tool) Go to product viewer dialog for this item.
dongle is the hero of this narrative, acting as the key to reviving a device when standard factory resets fail. The Plot: Why Flash the Go to product viewer dialog for this item. ?
Flashing is typically the "climax" of a troubleshooting journey. It occurs when a phone is:
Stuck on the Logo: The device refuses to boot past the Vivo startup screen.
Locked Out: A forgotten pattern or PIN has rendered the phone a paperweight. Model: Vivo 1801 Also known as: Vivo Y91
Soft-Bricked: The system is corrupted, often after a failed update or accidental file deletion. The Turning Point: Entering EDL Mode
runs on a Qualcomm Snapdragon 425 chipset. To communicate with the UMT tool, the phone must be put into EDL (Emergency Download) Mode.
The Test Point: For many 1801 units, this requires opening the back cover and using tweezers to short two specific gold "test points" on the motherboard while plugging in the USB cable.
Detection: Once successful, the computer recognizes it as "Qualcomm HS-USB QDLoader 9008," giving the UMT tool full control over the device's partitions. The Resolution: Using the UMT Tool
Using the UMT Qualcomm Tool (QCFire), the technician loads the "Flash File" (firmware). The tool then:
Wipes the Corrupted OS: Removing the buggy system and any user locks.
Writes New Firmware: Installing a fresh version of Funtouch OS.
Clears FRP: Bypassing the Factory Reset Protection (Google Lock) that often lingers after a wipe. A Cautionary Note
Every story has its risks. If the wrong flash file is used or the connection is interrupted, the phone may become permanently "dead". For this reason, professional technicians always verify the specific model version, such as , before starting the process.
The Vivo 1801, also known as the Vivo Y83, is a smartphone model that was released in 2018. If you're looking for the flash file for this device, specifically for use with the UMT (Universal Mobile Tool) tool, here's some general information:
The Vivo 1801 flash file is a firmware package that can be used to restore or update the device's operating system. This can be useful if your device is experiencing software issues or if you want to upgrade to a newer version of the firmware.
Important Notes:
Downloading the Flash File:
You can download the Vivo 1801 flash file from various online sources, but be cautious when downloading files from third-party websites, as they may contain malware or other issues.
Flashing the File with UMT:
To flash the Vivo 1801 flash file using UMT, you will need to:
Required Files:
Precautions:
If you're not experienced with flashing firmware or using the UMT tool, it's recommended to seek guidance from a professional or seek help from Vivo's official support channels.
The Vivo 1801 (Vivo Y71) flash file process using the Ultimate Multi Tool (UMT) is a standard solution for technicians looking to repair software-related issues like boot loops, hang-on-logo, or screen lock removal. Review of Vivo 1801 Flashing with UMT
Reliability for Repairs: UMT is highly effective for the Vivo 1801 because the device is powered by the Qualcomm Snapdragon 425 chipset. The tool's "QCFire" module is specifically designed for these Qualcomm-based repairs, making it a "go-to" for professional technicians.
Success with Lock Removal: It is widely cited as a top tool for removing FRP (Factory Reset Protection) and pattern locks on this specific model using the EDL (Emergency Download) Mode.
Critical Risk (The "Dead" Issue): A major drawback noted by users is the risk of the device becoming "dead" or losing its IMEI (Null IMEI) if the incorrect firmware version is used or if the reset process is interrupted.
Hardware Requirement: Unlike standard software updates, flashing via UMT requires a physical UMT Dongle and opening the device to short the EDL Test Points, which may be difficult for casual users. Device Specifications for Firmware Matching | Item | Details | |------|---------| | Model
To avoid bricking the device, ensure the flash file matches these core specs: Model Name: Vivo Y71 (1801). Processor: Qualcomm Snapdragon 425 (MSM8917). Android Version: 8.1 Oreo (Funtouch OS 4.0). Storage Variants: 16GB or 32GB. Flashing Highlights Tool Used UMT Dongle (QCFire Module) Connection Mode EDL Mode (via Test Points) Common Fixes Screen Lock, FRP Bypass, Logo Hang, System Corruption Official Support Vivo India Support (OTA/Recovery files only) vivo Y71-Lightweight Phone-Specs
The flash file for the Vivo 1801 (Vivo Y71) when used with the UMT (Ultimate Multi Tool) dongle provides several critical software repair features. These are typically accessed via the UMT Qualcomm Tool (QCFire) because the device uses a Qualcomm Snapdragon 425 processor. Key Features and Capabilities
Firmware Flashing: Allows for full software re-installation to fix "Hang on Logo" issues, software corruption, or auto-restart problems.
Screen Lock Removal: Resets forgotten patterns, PINs, or passwords by formatting the user data partition.
FRP Bypass: Removes the Google Factory Reset Protection (FRP) lock, allowing you to set up the device after a hard reset.
EDL Mode Support: Enables communication with the device through EDL (Emergency Download Mode) using hardware test points, which is necessary if the phone is soft-bricked or "dead".
IMEI and Network Repair: Can be used to restore null or invalid IMEI numbers and fix network-related software issues. Technical Requirements Processor: Qualcomm Snapdragon 425.
Connection Method: Requires the phone to be in EDL mode, often achieved by shorting specific test points on the motherboard while connecting the USB cable.
Software: Typically requires the latest version of the UMT QcFire module.
How to Flash Vivo 1801 (Y71) Using UMT Dongle: A Step-by-Step Guide If your Vivo 1801 (widely known as the
) is stuck on the boot logo, suffering from software bugs, or locked with a forgotten pattern, flashing the firmware is often the ultimate solution. Using the Ultimate Multi Tool (UMT)
dongle is one of the most reliable methods for handling Qualcomm-based Vivo devices like the 1801. This guide will walk you through downloading the correct Vivo 1801 flash file and using the UMT QC Fire module to restore your device. Pre-requisites for Flashing Before you begin, ensure you have the following: UMT Dongle: Connected to your PC with the latest drivers installed. QC Fire Setup: The latest version of the UMT Qualcomm module. Vivo 1801 Flash File: Official firmware (PD1731F_EX). Qualcomm USB Drivers: To ensure your PC recognizes the phone in EDL mode. EDL Mode Access: You will need to use Test Points on the motherboard to boot the device into 9008 EDL mode. Step 1: Download Vivo 1801 Firmware
You must use the correct firmware version to avoid bricking your device or causing "fail" errors during installation. Official Upgrade Packages: You can find official system updates on the Vivo Support Page Full Flash Files:
For a deep flash using UMT, look for the "Fastboot" or "Qualcomm" firmware package (typically in format) from trusted repositories like FirmwareFile Step 2: Preparing the Phone (EDL Mode) The Vivo 1801 requires EDL (Emergency Download) Mode to accept the flash file: Power off the phone and remove the back cover. Identify the two Test Points on the motherboard (usually near the battery connector).
Short these two points with a pair of tweezers while connecting the USB cable to the PC. Device Manager on your PC; it should show "Qualcomm HS-USB QDLoader 9008." Step 3: Flashing with UMT QC Fire Launch QC Fire: Open the UMT QC Fire module on your computer. Select Program:
Go to the "Flash" tab. Choose the "Program" button and navigate to your downloaded firmware folder to select the rawprogram0.xml Select Patch: In the same folder, select the patch0.xml Connect Device: Ensure your device is connected in EDL mode (9008). Execute Flash:
button. The tool will begin writing the firmware to your Vivo 1801. Step 4: Post-Flash Setup
Once the process is complete, the tool will display "Flash Done" or "Operation Finished". Disconnect the phone and reconnect the battery.
Press and hold the Power button to turn it on. The first boot may take 5–10 minutes.
If the phone is stuck on an FRP (Google Lock) screen after flashing, you can use the "Reset FRP" button in the UMT tool to clear it. Common Troubleshooting Hang on Logo:
If the device still hangs after flashing, try a "Wipe Cache Partition" from the recovery mode. File Fail Error:
This usually happens if the firmware version does not match the phone's model. Always verify the PD version (e.g., PD1731F) before downloading. Touch Not Working:
Flashing the wrong firmware can sometimes disable touch functionality. Re-flash with the official Funtouch OS version to fix this.
Flashing firmware carries risks and will erase all data on your device. Ensure you have backed up any critical information before proceeding. available for different regions?
Here’s a ready-to-post guide for Vivo 1801 (Vivo Y91/Y91i) flash file using UMT (Ultimate Multi Tool). You can use this on forums, Facebook groups, or repair blogs.
