Fritzbox 7530 VDSL Modem Firmware (in 24.10.x)

Installing and Using OpenWrt
1

Hi all,

Am currently using a Fritzbox 7530 with VDSL in the UK via my ISP Zen. I've been using OpenWRT for around a year. Previous to version 24.10, the modem firmware wasn't included so have been using a version extracted from the original AVM firmware image which has been working fine.

It was good to hear that the firmware is now included with the 24.10.x release versions, however this doesn't work in my case (always end up with NO-CARRIER on the VDSL circuit). If I swap the included modem firmware out for the previous AVM supplied version and reboot, the line then syncs correctly.

Would anybody be able to provide some next steps for troubleshooting the issue as would ideally like to use the included firmware!

Edited to add: I should have mentioned, but the firmwares load successfully in both instances, it's just that one syncs, one doesn't!

Thanks

Jon

2

FWIW Jon,

I have the same FRITZ!Box & ISP. For me the included firmware works fine.

Please check there isn't a config difference between your current & previous setup.

Regards
Andy

3

Hi Andy, thanks for the response, it's appreciated. I am pretty sure my config is identical as I just upgraded it but let it overwrite the previous modem firmware. Once I restored the original modem firmware onto 24.10, it worked fine again. My anonymised config is pasted below, I wondered if it's similar to yours? (Note I am using RFC4638 Baby Jumbo frames to enable a full 1500 byte payload to pass through). I am wondering if this is not supported on the distributed firmware):

cat /etc/config/network

config interface 'loopback'
        option device 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'

config globals 'globals'
        option ula_prefix 'fd01:abcd:ef85::/48'

config atm-bridge 'atm'
        option vpi '1'
        option vci '32'
        option encaps 'llc'
        option payload 'bridged'
        option nameprefix 'dsl'

config dsl 'dsl'
        option annex 'b'
        option tone 'a'
        option ds_snr_offset '0'

config device
        option name 'br-lan'
        option type 'bridge'
        list ports 'lan1'
        list ports 'lan2'
        list ports 'lan3'
        list ports 'lan4'

config interface 'lan'
        option device 'br-lan'
        option proto 'static'
        option ipaddr 'a.b.c.d'
        option netmask '255.255.255.248'
        option ip6assign '60'

config device
        option name 'dsl0'
        option mtu '1508'

config interface 'wan'
        option device 'dsl0.101'
        option proto 'pppoe'
        option username 'zenXXXXXX@zen'
        option password 'YYYYYYYY'
        option ipv6 '1'
        option mtu '1508'

config interface 'wan6'
        option device '@wan'
        option proto 'dhcpv6'

Thanks

Jon

4

In descending order of my perceived importance, option annexe 'a' rather than 'b' under DSL, & I have specified the xfer & line modes (but think these are guesses correctly anyway under the default) & I have deleted the ATM bridge (but recall it working before the deletion).

config dsl 'dsl'
        option annex 'a'
        option tone 'a'
        option xfer_mode 'ptm'
        option line_mode 'vdsl'
        option ds_snr_offset '0'