问闪存引导加载程序，现在adb/fastboot不再看到该设备

EN

zzz:$ pwd
/Users/zzz/Downloads/soju-imm76d
zzz:$ ls
bootloader-crespo-i9020xxkl1.img    flash-all.sh                flash-base.sh               image-soju-imm76d.zip           radio-crespo-i9020xxki1.img
zzz:$ flash-all.sh
sending 'bootloader' (1536 KB)...
OKAY [  0.282s]
writing 'bootloader'...
OKAY [  0.369s]
finished. total time: 0.651s
rebooting into bootloader...
OKAY [  0.001s]
finished. total time: 0.001s
< waiting for device >
^C
zzz:$ more flash-all.sh
#!/bin/sh

# Copyright (C) 2011 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

fastboot flash bootloader bootloader-crespo-i9020xxkl1.img
fastboot reboot-bootloader
sleep 5
fastboot flash radio radio-crespo-i9020xxki1.img
fastboot reboot-bootloader
sleep 5
fastboot -w update image-soju-imm76d.zip
zzz:$ fastboot devices
zzz:$ fastboot device
< waiting for device >
^C