z3 verizon版刷机出错了

yuyqhd

我的手机是z3 Verizon，我前段时间刷过一次底包了，但是最近再次刷到boot这个文件的时候，提示：
D:\XT1929-17_MESSI_VERIZON_9.0_PDXS29.84-51-6>fastboot flash boot boot.img
(bootloader) is-logical:boot_a: not found
Sending ‘boot_a’ (26461 KB) OKAY [ 0.577s]
Writing ‘boot_a’ (bootloader) Preflash validation failed
FAILED (remote: ‘’)
fastboot: error: Command failed
然后再刷系统文件的时候，提示：
D:\XT1929-17_MESSI_VERIZON_9.0_PDXS29.84-51-6>fastboot flash system system.img_sparsechunk.0
(bootloader) is-logical:system_a: not found
Sending ‘system_a’ (524284 KB) OKAY [ 11.407s]
Writing ‘system_a’ (bootloader) ****************
(bootloader) WARNING: OEM images are required in the LOCKED state.
(bootloader) Flashing images can result in a non-boot condition.
(bootloader) Flash a proper OEM signed boot.img first.
(bootloader) *****************************************************
(bootloader) flash permission denied
FAILED (remote: ‘’)
fastboot: error: Command failed
看这个样子是提示我没有unlock？我这个是Verizon的，也不能unlock啊？难道是前些天没有退出账户恢复出厂设置造成的么？那次我再次激活了，只是因为系统不稳定，总重启，我才刷的。论坛的大神帮忙给看一下？非常感谢