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sudo apt update -y
sudo apt full-upgrade -y
sudo apt install -y ack antlr3 asciidoc autoconf automake autopoint binutils bison build-essential \
bzip2 ccache cmake cpio curl device-tree-compiler fastjar flex gawk gettext gcc-multilib g++-multilib \
git gperf haveged help2man intltool libc6-dev-i386 libelf-dev libglib2.0-dev libgmp3-dev libltdl-dev \
libmpc-dev libmpfr-dev libncurses5-dev libncursesw5-dev libreadline-dev libssl-dev libtool lrzsz \
mkisofs msmtp nano ninja-build p7zip p7zip-full patch pkgconf python2.7 python3 python3-pip libpython3-dev qemu-utils \
rsync scons squashfs-tools subversion swig texinfo uglifyjs upx-ucl unzip vim wget xmlto xxd zlib1g-dev

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git clone https://github.com/coolsnowwolf/lede
cd lede
./scripts/feeds update -a
./scripts/feeds install -a
make menuconfig

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make download -j8
make V=s -j1

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#!/usr/bin/env python3
import sys
import hashlib

if sys.version_info < (3,7):
    print("python version is not supported", file=sys.stderr)
    sys.exit(1)

# credit goes to zhoujiazhao:
# https://blog.csdn.net/zhoujiazhao/article/details/102578244

salt = {'r1d': 'A2E371B0-B34B-48A5-8C40-A7133F3B5D88',
        'others': 'd44fb0960aa0-a5e6-4a30-250f-6d2df50a'}


def get_salt(sn):
    if "/" not in sn:
        return salt["r1d"]

    return "-".join(reversed(salt["others"].split("-")))


def calc_passwd(sn):
    passwd = sn + get_salt(sn)
    m = hashlib.md5(passwd.encode())
    return m.hexdigest()[:8]


if __name__ == "__main__":
    if len(sys.argv) != 2:
        print(f"Usage: {sys.argv[0]} <S/N>")
        sys.exit(1)

    serial = sys.argv[1]
    print(calc_passwd(serial))

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abc@openwrt-build:~$ python calc_ax6s_pwd.py SN
00d135eb

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nvram set ssh_en=1 && nvram set uart_en=1 && nvram set boot_wait=on && nvram set bootdelay=3 && nvram set flag_try_sys1_failed=0 && nvram set flag_try_sys2_failed=1
nvram set flag_boot_rootfs=0 && nvram set "boot_fw1=run boot_rd_img;bootm" && nvram set flag_boot_success=1 && nvram commit 
/etc/init.d/dropbear enable && /etc/init.d/dropbear start

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mtd -r write /tmp/factory.bin firmware