The firmware is not a single file but a packaged set of images, often distributed by ZTE as a (typically named update.zip ), or a full Firmware Package (PAC) for use with research download tools like the UNISOC Upgrade Tool or ResearchDownload .
: Follow steps 1-2 from the previous method, ensuring the file is named correctly (usually update.zip Enter Recovery Mode Power off the device completely. Press and hold the Volume Up + Power buttons simultaneously. Release the buttons when the ZTE logo appears to enter the Android Recovery Navigate and Install Volume buttons to scroll and the Power button to select. Apply update from SD card Select your firmware file. Firmware ZTE Blade V30 Vita