FritzBox 7530 Not Flashing?

Installing and Using OpenWrt
1

Suddenly, I can no longer flash my fritzbox 7530 (ipq40xx). I have created an image with a custom config in the squashfs. However, if I flash the fritzbox 7530, everything seems to work, but after a reboot everything is the same. I was not even longer able to boot via tftp into an initramfs. Any idea what I could try?

2

Can I somehow manually dd the image to the flash?

3

Never use dd on NAND flash, you need NAND aware tools for that (nandwrite, mtd, sysupgrade, etc.).

Disclaimer: I'm not familiar with this particular device, so don't take the above as advice for your device.

1 Like
4

Thanks. I was able to use a vm and recover fritz!box os with the recovery tool. Afterwards, I flashed 19.07.7 and then 21.02 and everything worked. Than I flashed an image I created with imagebuilder (openwrt snapshot 21.02) with some config. Afterwards, I was not able to flash a different image. Now I recoverd again with the fritz!box recovery tool. I want to try 21.02 -> 19.07. However, I am not ble to start initramfs boot again. :confused:

  • WiFi Not Starting

  • Complete 21.02 Flash

  • For the not working fritz!box the caldata is at 0x3C000 at urlader1: 3AVM7530V_CAL0_V4

  • For the working wifi fritz!box it is at 0x3C800 at urlader1 : 3AVM7530V_CAL0_V5

5

I am on 21.02.0-rc3 with a FB 7530 so i don't know if this helps?

Here's my dmesg from 21.02.0-rc3 https://gist.github.com/francisuk1989/848df6e5b44d2e030ba9dfd36b7e3580

/etc/config/wireless

config wifi-device 'radio0'
	option type 'mac80211'
	option hwmode '11g'
	option path 'platform/soc/a000000.wifi'
	option htmode 'HT40'
	option country 'DE'
	option cell_density '0'
	option noscan '1'
	option channel '13'

config wifi-iface 'default_radio0'
	option device 'radio0'
	option network 'lan'
	option mode 'ap'
	option disassoc_low_ack '0'
	option key '123456789'
	option ssid 'OpenWrt 2.4G'
	option encryption 'psk2+ccmp'

config wifi-device 'radio1'
	option type 'mac80211'
	option hwmode '11a'
	option path 'platform/soc/a800000.wifi'
	option htmode 'VHT80'
	option channel '108'
	option country 'DE'
	option cell_density '0'
	option noscan '1'

config wifi-iface 'default_radio1'
	option device 'radio1'
	option network 'lan'
	option mode 'ap'
	option disassoc_low_ack '0'
	option key '123456789'
	option ssid 'OpenWrt 5G'
	option encryption 'psk2+ccmp'
6

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