FritzBox 4020 FTP install doesn't work

christiandomes · March 9, 2021, 12:45pm

Hello
I would like to flash my FritzBox 4020 with openwrt.

ftp -n 192.168.178.1

ftp> quote USER adam2
ftp> quote PASS adam2
ftp> binary
ftp> debug
ftp> quote MEDIA FLSH
ftp> put openwrt-sysupgrade.bin mtd1

But when I do the last command the console say:

ftp> openwrt-19.07.7-ath79-generic-avm_fritz4020-squashfs-sysupgrade.bin mtd1
---> PORT 192,168,178,20,243,164
502 Command not implemented
---> STOR mtd1
425 can't open data connection

What can I do?

iplaywithtoys · March 9, 2021, 12:51pm

Looking at https://openwrt.org/toh/avm/fritz.box.4020 it appears there's an extra command which might be useful: passive

christiandomes · March 9, 2021, 12:54pm

the command passive doesnt work

frollic · March 9, 2021, 1:41pm

You're not specifying OS used, but passive mode isn't supported by the ftp
client in win10, you'll need something else.

christiandomes · March 9, 2021, 2:06pm

Where is passive mode supported
I have kali linux

iplaywithtoys · March 9, 2021, 2:08pm

Is your computer on the same subnet (192.168.178.x) ?

If not, are both ports 20 and 21 permitted through any intermediate devices?

frollic · March 9, 2021, 2:11pm

linux ftp (at least the one that comes with Fedora) supports passive, but passive also requires firewall ports to be opened, or temp shut down.

ftp> help passive
passive         enter passive transfer mode
ftp> passive
Passive mode off.
ftp> passive
Passive mode on.
ftp>

modified the subject, this issue has nothing to do with openwrt.

christiandomes · March 9, 2021, 2:55pm

yes its in the same

tmomas · March 9, 2021, 4:12pm

What happens when you try to install OpenWrt via fritzflash?

christiandomes · March 10, 2021, 9:01am

Its says: No Immage found! Use --image
But how can I use --image

frollic · March 10, 2021, 9:08am

do you have the files specified in the code, and are they named accordingly ?

"219": {
            "gluon": [
                "avm-fritz-box-4020-sysupgrade.bin"
            ],
            "openwrt": [
                "fritz4020-squashfs-sysupgrade.bin",
                "avm_fritz4020-squashfs-sysupgrade.bin"
            ]

github.com

freifunk-darmstadt/fritz-tools/blob/master/fritzflash.py

#! /usr/bin/env python3
import argparse
import ipaddress
import os
import socket
import time
from ftplib import FTP

AUTODISCOVER_TIMEOUT = 1
FTP_TIMEOUT = 2
FTP_MAX_RETRY = 10


class FritzFTP(FTP):
    class ConnectionTimeout(Exception):
        pass

    def __init__(self, ip, username='adam2', password='adam2', timeout=1, max_retry=0, retry_cb=None):
        i = 1
        while i <= max_retry:

This file has been truncated. show original

(if running Windows, to be able to use parameters, you probably have to execute the .py from a cmd prompt)

christiandomes · March 10, 2021, 10:02am

Thanks it works

frollic · March 10, 2021, 10:07am

if everything else fails, RTFM (or in this case, the source code)

tmomas · March 10, 2021, 10:47am

If your problem is solved, please consider marking this topic as [Solved]. See How to mark a topic as [Solved] for a short how-to.

system · March 20, 2021, 10:48am

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