diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9260c3a..ba22c81 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,6 @@
 # 履歴
+* 1.7.1
+    - オンラインインストール時に途中で失敗する問題を修正
 * 1.7.0
     - APNの設定方法を変更
     - `/boot/apn`にファイルを配置することにより起動時にAPNを設定できる機能を追加
diff --git a/README.md b/README.md
index 068bac3..25367ca 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ $ make PI_USER=linaro PI_HOST=192.168.1.10
 ### 動作確認 (RPi)
 
 ```bash
-$ VERSION=1.7.0 && rm -fr tmp && mkdir tmp && cd tmp && \
+$ VERSION=1.7.1 && rm -fr tmp && mkdir tmp && cd tmp && \
   tar zxf ~/candy-pi-lite-service-${VERSION}.tgz
 $ time sudo SRC_DIR=$(pwd) DEBUG=1 ./install.sh
 $ time sudo SRC_DIR=$(pwd) DEBUG=1 CONFIGURE_STATIC_IP_ON_BOOT=1 ./install.sh
diff --git a/install.sh b/install.sh
index 972a9cf..255f58a 100755
--- a/install.sh
+++ b/install.sh
@@ -18,7 +18,7 @@ VENDOR_HOME=/opt/candy-line
 
 SERVICE_NAME=candy-pi-lite
 GITHUB_ID=CANDY-LINE/candy-pi-lite-service
-VERSION=1.7.0
+VERSION=1.7.1
 # Channel B
 UART_PORT="/dev/ttySC1"
 MODEM_BAUDRATE=${MODEM_BAUDRATE:-460800}
@@ -49,8 +49,6 @@ CONFIGURE_STATIC_IP_ON_BOOT=${CONFIGURE_STATIC_IP_ON_BOOT:-""}
 OFFLINE_PERIOD_SEC=${OFFLINE_PERIOD_SEC:-30}
 ENABLE_WATCHDOG=${ENABLE_WATCHDOG:-1}
 COFIGURE_ENOCEAN_PORT=${COFIGURE_ENOCEAN_PORT:-1}
-FALLBACK_APN=$(cat ${SRC_DIR}/systemd/fallback_apn)
-BOOT_APN=${BOOT_APN:-${FALLBACK_APN}}
 
 REBOOT=0
 
@@ -279,6 +277,8 @@ function install_candy_red {
 }
 
 function test_boot_apn {
+  FALLBACK_APN=$(cat ${SRC_DIR}/systemd/fallback_apn)
+  BOOT_APN=${BOOT_APN:-${FALLBACK_APN}}
   CREDS=`/usr/bin/env python -c "with open('${SRC_DIR}/systemd/apn-list.json') as f:import json;c=json.load(f);print('${BOOT_APN}' in c)"`
   if [ "${CREDS}" != "True" ]; then
     err "Invalid BOOT_APN value => ${BOOT_APN}"