线刷 Android 系统的时候，线很重要...

TL;DR: 如果刷机诡异的失败，可以试试官方线。

寒假出去玩之前把 5X 更新一下做备用机，线刷 7.1.1

正常./flash-all.sh一开始用一根第三方的 Google 工程师说好的线，结果出现这个结果:

Will-Mac-Pro:bullhead-nmf26f will$ ./flash-all.sh
< waiting for any device >
target reported max download size of 536870912 bytes
sending 'bootloader' (4603 KB)...
OKAY [  4.106s]
writing 'bootloader'...
OKAY [  0.142s]
finished. total time: 4.247s
rebooting into bootloader...
OKAY [  0.020s]
finished. total time: 0.020s
target reported max download size of 536870912 bytes
sending 'radio' (56614 KB)...
OKAY [  1.296s]
writing 'radio'...
OKAY [  0.549s]
finished. total time: 1.846s
rebooting into bootloader...
OKAY [  0.020s]
finished. total time: 0.020s
target reported max download size of 536870912 bytes
archive does not contain 'boot.sig'
archive does not contain 'recovery.sig'
archive does not contain 'system.sig'
ERROR: usb_write failed with status e00002ed
ERROR: usb_write failed with status e00002d8
archive does not contain 'vendor.sig'
ERROR: usb_write failed with status e00002d8
ERROR: usb_write failed with status e00002d8
ERROR: usb_write failed with status e00002d8
ERROR: usb_write failed with status e00002d8
wiping userdata...
ERROR: usb_write failed with status e00002d8
Erase successful, but not automatically formatting.
Can't determine partition type.
FAILED (command write failed (Invalid argument))
ERROR: usb_write failed with status e00002d8
--------------------------------------------
ERROR: usb_write failed with status e00002d8
getvar:version-bootloader FAILED (command write failed (Invalid argument))
finished. total time: 0.000s

尝试几次无果，换了 Project Fi 送的线之后成功刷入:

Will-Mac-Pro:bullhead-nmf26f will$ ./flash-all.sh
target reported max download size of 536870912 bytes
sending 'bootloader' (4603 KB)...
OKAY [  0.181s]
writing 'bootloader'...
OKAY [  0.154s]
finished. total time: 0.336s
rebooting into bootloader...
OKAY [  0.020s]
finished. total time: 0.020s
target reported max download size of 536870912 bytes
sending 'radio' (56614 KB)...
OKAY [  1.280s]
writing 'radio'...
OKAY [  0.554s]
finished. total time: 1.834s
rebooting into bootloader...
OKAY [  0.020s]
finished. total time: 0.020s
target reported max download size of 536870912 bytes
archive does not contain 'boot.sig'
archive does not contain 'recovery.sig'
archive does not contain 'system.sig'
archive does not contain 'vendor.sig'
wiping userdata...
Creating filesystem with parameters:
    Size: 27283927040
    Block size: 4096
    Blocks per group: 32768
    Inodes per group: 8176
    Inode size: 256
    Journal blocks: 32768
    Label:
    Blocks: 6661115
    Block groups: 204
    Reserved block group size: 1024
Created filesystem with 11/1667904 inodes and 148720/6661115 blocks
wiping cache...
Creating filesystem with parameters:
    Size: 100663296
    Block size: 4096
    Blocks per group: 32768
    Inodes per group: 6144
    Inode size: 256
    Journal blocks: 1024
    Label:
    Blocks: 24576
    Block groups: 1
    Reserved block group size: 7
Created filesystem with 11/6144 inodes and 1422/24576 blocks
--------------------------------------------
Bootloader Version...: BHZ11h
Baseband Version.....: M8994F-2.6.36.2.20
Serial Number........: 00d0ebe42cb2c945
--------------------------------------------
checking product...
OKAY [  0.020s]
checking version-bootloader...
OKAY [  0.020s]
checking version-baseband...
OKAY [  0.020s]
sending 'boot' (12037 KB)...
OKAY [  0.342s]
writing 'boot'...
OKAY [  0.133s]
sending 'recovery' (16165 KB)...
OKAY [  0.417s]
writing 'recovery'...
OKAY [  0.214s]
erasing 'system'...
OKAY [  0.756s]
sending sparse 'system' 1/6 (520374 KB)...
OKAY [ 12.213s]
writing 'system' 1/6...
OKAY [  5.839s]
sending sparse 'system' 2/6 (515510 KB)...
OKAY [ 11.835s]
writing 'system' 2/6...
OKAY [  6.269s]
sending sparse 'system' 3/6 (479538 KB)...
OKAY [ 10.748s]
writing 'system' 3/6...
OKAY [  5.332s]
sending sparse 'system' 4/6 (514677 KB)...
OKAY [ 11.521s]
writing 'system' 4/6...
OKAY [  5.885s]
sending sparse 'system' 5/6 (524285 KB)...
OKAY [ 11.719s]
writing 'system' 5/6...
OKAY [  5.685s]
sending sparse 'system' 6/6 (182585 KB)...
OKAY [  4.208s]
writing 'system' 6/6...
OKAY [  1.951s]
erasing 'vendor'...
OKAY [  0.118s]
sending 'vendor' (197974 KB)...
OKAY [  4.354s]
writing 'vendor'...
OKAY [  2.678s]
erasing 'userdata'...
OKAY [  0.942s]
sending 'userdata' (138993 KB)...
OKAY [  3.068s]
writing 'userdata'...
OKAY [  1.494s]
erasing 'cache'...
OKAY [  0.075s]
sending 'cache' (5688 KB)...
OKAY [  0.215s]
writing 'cache'...
OKAY [  0.083s]
rebooting...

finished. total time: 108.245s