This app downloads a TWRP recovery image for your device and flashes it to the FOTAKernel partition. Note. Only for Xperia users using custom ROMs/kernels. Works only on rooted and bootloader unlocked phones. Supported devices. Xperia Z. Xperia ZL. Xperia Tablet Z Xperia T. Xperia V. TO BE SUPPORTED Xperia ZR.