[FS#3931] [wndr3700v4] unable to upgrade from ar71xx to ath79

[OpenWrt Bugs]

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

User who did this - hamelg (hamelg) 

Attached to Project - OpenWrt/LEDE Project
Summary - [wndr3700v4] unable to upgrade from ar71xx to ath79
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - openwrt-19.07
Due in Version - Undecided
Due Date - Undecided
Details - I'm trying to upgrade my wndr3700v4 router with the image downloaded at https://downloads.openwrt.org/releases/21.02.0-rc3/targets/ath79/nand/openwrt-21.02.0-rc3-ath79-nand-netgear_wndr3700-v4-squashfs-sysupgrade.bin

The file has the correct sum but sysupgrade doesn't accept it.

The current and running image has been built with these settings :
CONFIG_TARGET_ar71xx=y
CONFIG_TARGET_ar71xx_nand=y
CONFIG_TARGET_ar71xx_nand_DEVICE_WNDR3700V4=y
any ideas ?

root at OpenWrt:/tmp# cat /etc/openwrt_release 
DISTRIB_ID='OpenWrt'
DISTRIB_RELEASE='19.07-SNAPSHOT'
DISTRIB_REVISION='r11333-cc0b70467d'
DISTRIB_TARGET='ar71xx/nand'
DISTRIB_ARCH='mips_24kc'
DISTRIB_DESCRIPTION='OpenWrt 19.07-SNAPSHOT r11333-cc0b70467d'
DISTRIB_TAINTS='no-all'

root at OpenWrt:/tmp# uname -a
Linux OpenWrt 4.14.229 #0 Fri Apr 9 13:43:38 2021 mips GNU/Linux

root at OpenWrt:/tmp# sha256sum /tmp/openwrt-21.02.0-rc3-ath79-nand-netgear_wndr3700-v4-squashfs-sysupgrade.bin
dacbea4403807a104aac151f1d4973c16477b9095ba698b0f19a4ceaf8e2c38d  /tmp/openwrt-21.02.0-rc3-ath79-nand-netgear_wndr3700-v4-squashfs-sysupgrade.bin

root at OpenWrt:/tmp# sysupgrade -n -v /tmp/openwrt-21.02.0-rc3-ath79-nand-netgear_wndr3700-v4-squashfs-sysupgrade.bin 
Device wndr3700v4 not supported by this image
Supported devices: netgear,wndr3700-v4
Invalid sysupgrade file.
Image check failed.


More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3931

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