No. The "Vita" variant has different hardware (usually 3GB RAM vs 4GB on standard V30). Cross-flashing will break the touchscreen or camera.
Over time, the firmware can become sluggish. Firmware ZTE Blade V30 Vita
The glowing blue progress bar on the was stuck at 99%. Over time, the firmware can become sluggish
The phone had been bricked—a digital paperweight—until Elias found a corrupted file in the directory labeled V30_Vita_OS_X.9 . It was a version that shouldn't exist. According to the official ZTE logs, the Vita series stopped at a much lower build number. It was a version that shouldn't exist
Power off the phone, then hold the Power and Volume Up buttons simultaneously until the robot icon appears.
If the phone still boots, go to Settings > About Phone > Build Number . You need the last three digits (e.g., ZTE_BLADE_V30_VITA_V1.0.0_B15 ).