UMT, or Universal Motherboard Tester, is a professional-grade dongle and software suite used for:
For the Vivo 1801, the UMT MediaTek Module or UMT Pro software is used in conjunction with the flash file.
Note: UMT requires a licensed dongle or a monthly activation. It is not a free tool.
Users and technicians search for this specific flash file to resolve:
| 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. Vivo 1801 Flash File Umt
Using UMT to flash Vivo 1801 is efficient when the device is soft-bricked or locked. Following the correct scatter selection, driver installation, and BROM connection steps ensures a high success rate. For dead boot issues (no preloader response), an EMCP pinout or test point method may be required, which is beyond the scope of this paper.
| 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 |
Model: Vivo 1801 (Vivo Y91 / Y91i)
Tool Supported: UMT (Ultimate Multi Tool)
Purpose: Fix dead boot, FRP lock, hang on logo, and software issues.
If you own a Vivo 1801 (often marketed as Vivo Y91 or Y91i) and it’s stuck on the logo, bootlooping, password locked, or completely dead after a failed OTA update – you’ve come to the right place.
The UMT (Ultimate Multi Tool) box/dongle is one of the most reliable ways to flash the official firmware on this MediaTek (MT6762) device. For the Vivo 1801, the UMT MediaTek Module
This Vivo 1801 firmware is 100% tested on UMT. Always backup NV/IMEI before flashing. For dead boot repair, use UMT’s MTK Boot Repair option with a known good dump.
Need help? Comment below or contact for teamviewer support.
The Vivo 1801 (Vivo Y71) can be flashed using the UMT (Ultimate Multi Tool) to fix software issues like bootloops, hanging on the logo, or forgotten passwords. 📂 Required Resources
Flash File: Ensure you download the correct Stock ROM (Qualcomm) for the Vivo 1801.
Tool: UMT Pro / UMT Dongle (specifically the QCFire module). Note: UMT requires a licensed dongle or a
Drivers: Qualcomm HS-USB QDLoader 9008 drivers must be installed.
Hardware: A high-quality USB cable and a fully charged battery. 🛠 Flashing Procedure Open QC Fire: Launch the UMT QcFire module on your PC. Select Model: Go to the Read & Tools tab. Select Brand: Vivo. Select Model: Vivo Y71 (1801). Load Firmware: Click on the Flash tab.
Select the Programmer (elf/mbn) and XML (rawprogram0.xml and patch0.xml) files from your downloaded folder. EDL Mode: Power off the device.
Short the Test Points on the motherboard (requires opening the back cover) to enter EDL Mode (9008). Connect the device to the PC via USB. Start Flash: Click the Flash button in UMT. Wait for the "Operation Finished" message. ⚠️ Critical Notes 📍 Backup Data: Flashing wipes all user data.
⚡ Battery: Maintain at least 50% charge to prevent mid-process shutdowns.
🆔 Account Locks: This process may trigger FRP (Factory Reset Protection); use UMT's "Reset FRP" feature if locked out of Google. If you'd like, let me know: The specific error message you are seeing If you need the Test Point diagram If your PC is not detecting the phone in Device Manager