, specifically the model variant PD1930F_EX , received several firmware updates throughout 2021 to enhance system stability and security. The most notable official release for this period was version PD1930F_EX_A_1.18.1 , released on May 8, 2021 Core Firmware Profile (2021) Operating System : Funtouch OS 9.1 (based on Android 9) Target Model : vivo Y12i (Open Market versions) Build Version : PD1930F_EX_A_1.18.1 Release Date : May 8, 2021 : Approximately 3,072 MB (3.07 GB) Technical Specifications (Impacted Hardware)
before starting any firmware flash to prevent a "brick" scenario. Data Backup: vivo y12i firmware 2021
OTA (Over-the-Air): Navigate to Settings > System Update to check for and install the latest official releases automatically. , specifically the model variant PD1930F_EX , received
(Qualcomm Flash Image Loader) since the Y12i uses a Qualcomm processor. 4. How to Install the Firmware Method A: The Simple SD Card Update (OTA Style) If your phone still boots into the UI or Recovery Mode: Download the Firmware OTA package (usually a .zip file) from the official Vivo Support page Move the file to the root directory of your SD card. Turn off the phone, then press Power + Volume Up Fastboot Mode Recovery Mode Install Update and select the firmware file. Wait for the progress bar to finish and reboot. Method B: Fastboot/EDL Flashing (For Bootloops) If your device is stuck on the Vivo logo: Download the Fastboot/Flash File (contains images like prog_emmc_firehose on your PC. Content.xml or individual Programmer Rawprogram files from the firmware folder. Connect your phone in Restarting your device Wiping the cache and data
System Lag: Before reflashing, try a Hard Reset (Power + Volume Up) to enter recovery mode and wipe the cache partition.