[FS#3853] NETGEAR WNDR4300v2 Bricked on Power Cycle After Flash

OpenWrt Bugs openwrt-bugs at lists.openwrt.org
Fri Jun 4 08:59:20 PDT 2021


A new Flyspray task has been opened.  Details are below. 

User who did this - rvernica (rvernica) 

Attached to Project - OpenWrt/LEDE Project
Summary - NETGEAR WNDR4300v2 Bricked on Power Cycle After Flash
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - High
Priority - Very Low
Reported Version - openwrt-21.02
Due in Version - Undecided
Due Date - Undecided
Details - On a NETGEAR WNDR4300v2 with stock firmware I flash OpenWrt. It works fine after flash (not power cycled *yet*). On the first power cycle the device is fails to start. I'm able to restore the factory firmware using nmrpflash. 

Device: NETGEAR WNDR4300v2
Factory firmware: V1.0.0.58
OpenWrt firmware: openwrt-21.02.0-rc2-ath79-nand-netgear_wndr4300-v2-squashfs-factory.img

I checked the OpenWrt firmware checksum. I did a factory install. On first boot, OpenWrt works just fine. I'm able to adjust settings and Save & Apply them. If I power-cycle the device it fails to boot. The problem exists even if I don't change any settings in OpenWrt. The Power led is amber continuously. The led for ports 1-4 flash once then remain off. After about 18 seconds the cycle repeats. 

I'm able to restore the factory firmware by connecting to port 1. I set a static IP Gateway: I ran the nmrpflash tool and power On the unit:

> sudo ./nmrpflash -i enp0s25 -f WNDR4300v2-V1.0.0.58.img
Waiting for physical connection.
Advertising NMRP server on enp0s25 ... |
Received configuration request from xx:yy:...
Sending configuration:
Received upload request: filename 'firmware'.
Uploading WNDR4300v2-V1.0.0.58.img ... OK
Waiting for remote to respond.
Remote finished. Closing connection.
Reboot your device now.

Once completed the factory firmware is restored.


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