求救！开机FASTBOOT

C:\Users\Y\Desktop\fastboot>fastboot devices
MSM7625ASKU3 fastboot
C:\Users\Y\Desktop\fastboot>fastboot flash boot.2knand.img
unknown partition *boot.2knand.img*
error: cannot determine image filename for *boot.2knand.img*
C:\Users\Y\Desktop\fastboot>fastboot erase boot
erasing *boot*... OKAY
C:\Users\Y\Desktop\fastboot>fastboot erase system
erasing *system*... OKAY
C:\Users\Y\Desktop\fastboot>fastboot erase userdata
erasing *userdata*... OKAY
C:\Users\Y\Desktop\fastboot>fastboot erase recovery
erasing *recovery*... OKAY
C:\Users\Y\Desktop\fastboot>fastboot flash boot boot.2knand.img
sending *boot* (3466 KB)... OKAY
writing *boot*... OKAY
C:\Users\Y\Desktop\fastboot>fastboot flash persist.2knand.img
unknown partition *persist.2knand.img*
error: cannot determine image filename for *persist.2knand.img*
C:\Users\Y\Desktop\fastboot>fastboot flash persist persist.2knand.img
sending *persist* (16 KB)... OKAY
writing *persist*... OKAY
C:\Users\Y\Desktop\fastboot>fastboot flash recovery recovery.2knand.img
sending *recovery* (3706 KB)... OKAY
writing *recovery*... OKAY
C:\Users\Y\Desktop\fastboot>fastboot flash splash splash.2knand.img
sending *splash* (300 KB)... OKAY
writing *splash*... FAILED (remote: unknown partition name)
C:\Users\Y\Desktop\fastboot>fastboot flash system system.2knand.img
sending *system* (214229 KB)... FAILED (data transfer failure (Too many links))
C:\Users\Y\Desktop\fastboot>
大神们看看这个是哪里有问题啊，刷了N次都不行，开机只能进FASTBOOT。重启后要么卡FASTBOOT模式，要么卡开机屏那里，用QDL刷的话，点了下载APP就卡住。
C:\Users\Y\Desktop\fastboot>fastboot flash splash splash.2knand.img
sending *splash* (300 KB)... OKAY
writing *splash*... FAILED (remote: unknown partition name)