wget http://192.168.1.2/openwrt-ar71xx-generic-tl-wr740n-v4-squashfs-factory.bin
sysupgrade -v /tmp/openwrt-ar71xx-generic-tl-wr740n-v4-squashfs-factory.bin
# orig
make image PROFILE=TLWR740 PACKAGES="base-files busybox dnsmasq dropbear firewall \
hotplug2 iptables iw jshn kernel kmod-ath kmod-ath9k kmod-ath9k-common kmod-cfg80211 \
kmod-crypto-aes kmod-crypto-arc4 kmod-crypto-core kmod-gpio-button-hotplug \
kmod-ipt-conntrack kmod-ipt-core kmod-ipt-nat kmod-ipt-nathelper kmod-leds-gpio \
kmod-ledtrig-default-on kmod-ledtrig-netdev kmod-ledtrig-timer -kmod-ledtrig-usbdev kmod-lib-crc-ccitt \
kmod-mac80211 kmod-nls-base kmod-ppp kmod-pppoe kmod-pppox -kmod-usb-core -kmod-usb-ohci \
-kmod-usb2 kmod-wdt-ath79 libblobmsg-json libc libgcc libip4tc libiwinfo libiwinfo-lua libjson \
liblua libnl-tiny libubox libubus libubus-lua libuci libuci-lua libxtables lua luci luci-app-firewall \
luci-i18n-english luci-lib-core luci-lib-ipkg luci-lib-nixio luci-lib-sys luci-lib-web \
luci-mod-admin-core luci-mod-admin-full luci-proto-core luci-proto-ppp luci-sgi-cgi \
luci-theme-base luci-theme-openwrt mtd netifd opkg ppp ppp-mod-pppoe swconfig uboot-envtools \
ubus ubusd uci uhttpd wpad-mini luci-app-qos luci-app-upnp"
# strongswan
make image PROFILE=TLWR740 PACKAGES="base-files busybox ddns-scripts dnsmasq dropbear
firewall hotplug2 ip iptables iptables-mod-conntrack iptables-mod-conntrack-extra \
iptables-mod-filter iptables-mod-imq iptables-mod-ipopt iptables-mod-ipsec iptables-mod-nat \
iptables-mod-nat-extra kernel kmod-button-hotplug kmod-crypto-aes kmod-crypto-authenc \
kmod-crypto-core kmod-crypto-des kmod-crypto-hmac kmod-crypto-md5 kmod-crypto-sha1 \
kmod-input-core kmod-input-gpio-buttons kmod-input-polldev kmod-ipsec kmod-ipsec4 \
kmod-ipt-conntrack kmod-ipt-conntrack-extra kmod-ipt-core kmod-ipt-filter kmod-ipt-imq kmod-ipt-ipopt \
kmod-ipt-ipsec kmod-ipt-nat kmod-ipt-nat-extra kmod-ipt-nathelper kmod-iptunnel4 \
kmod-leds-gpio kmod-sched kmod-textsearch kmod-tun libc libgcc libgmp libiptc liblzo libnl-tiny \
libopenssl libpthread librt libuci libxtables mini-snmpd miniupnpd mtd openvpn opkg qos-scripts \
strongswan4 strongswan4-app-charon strongswan4-app-pluto strongswan4-mod-aes strongswan4-mod-attr \
strongswan4-mod-des strongswan4-mod-dnskey strongswan4-mod-fips-prf strongswan4-mod-gmp \
strongswan4-mod-hmac strongswan4-mod-kernel-netlink strongswan4-mod-md5 strongswan4-mod-pem \
strongswan4-mod-pgp strongswan4-mod-pkcs1 strongswan4-mod-pubkey strongswan4-mod-random \
strongswan4-mod-resolve strongswan4-mod-sha1 strongswan4-mod-sha2 strongswan4-mod-stroke \
strongswan4-mod-updown strongswan4-mod-x509 strongswan4-mod-xcbc strongswan4-utils tc uci \
udevtrigger -vsc7385-ucode-ap83 -vsc7385-ucode-pb44 -vsc7395-ucode-ap83 -vsc7395-ucode-pb44 \
zlib -kmod-ath9k -wpad-mini"
# success 1
make image PROFILE=TLWR740 PACKAGES="base-files busybox dnsmasq dropbear firewall \
hotplug2 iptables kernel kmod-ath kmod-ath9k kmod-ath9k-common kmod-cfg80211 \
kmod-crypto-arc4 kmod-gpio-button-hotplug \
kmod-ipt-conntrack kmod-ipt-core kmod-ipt-nat kmod-ipt-nathelper kmod-leds-gpio \
kmod-ledtrig-default-on kmod-ledtrig-netdev kmod-ledtrig-timer kmod-lib-crc-ccitt \
kmod-mac80211 kmod-nls-base kmod-ppp kmod-pppoe kmod-pppox \
kmod-wdt-ath79 libblobmsg-json libc libgcc libip4tc \
mtd netifd opkg ppp ppp-mod-pppoe swconfig uboot-envtools uhttpd \
ubus ubusd uci \
djbdns-base ip \
iptables-mod-nat-extra \
kmod-crypto-aes kmod-crypto-authenc \
kmod-crypto-core kmod-crypto-des kmod-crypto-hmac kmod-crypto-md5 kmod-crypto-sha1 \
kmod-ipt-ipsec kmod-ipsec kmod-ipsec4 \
libopenssl \
strongswan strongswan-default strongswan-mod-aes strongswan-mod-attr strongswan-charon \
strongswan-mod-aes strongswan-mod-dhcp strongswan-mod-uci \
strongswan-mod-des strongswan-mod-dnskey strongswan-mod-fips-prf strongswan-mod-gmp \
strongswan-mod-hmac strongswan-mod-kernel-netlink strongswan-mod-md5 strongswan-mod-pem \
strongswan-mod-pgp strongswan-mod-pkcs1 strongswan-mod-pkcs8 strongswan-mod-pkcs11 \
strongswan-mod-pubkey strongswan-mod-random \
strongswan-mod-resolve strongswan-mod-sha1 strongswan-mod-sha2 strongswan-mod-stroke \
strongswan-mod-updown strongswan-mod-x509 strongswan-mod-xcbc strongswan-utils"