sysupgrading fat image does not work anymore on d-link dir-825 b1

[daniel.petre]

Hello,
seems like with trunk r41842 i cannot sysupgrade anymore to a fat image on d-link dir-825 b1:

root@openwrt:/tmp# sysupgrade -n -i openwrt-ar71xx-generic-dir-825-b1-fat-squashfs-sysupgrade.bin
Do you have a backup of the caldata partition? (y/N): y
Keep config files over reflash (y/N): n
killall: watchdog: no process killed
Sending TERM to remaining processes ... logd netifd odhcpd dnsmasq uhttpd smbd nmbd ntpd ubusd askfirst
Sending KILL to remaining processes ... askfirst
Switching to ramdisk...
Performing system upgrade...
no valid calibration data found in caldata
unable to backup calibration data
@openwrt:/tmp# cat /proc/mtd
dev: size erasesize name
mtd0: 00040000 00010000 "uboot"
mtd1: 00010000 00010000 "config"
mtd2: 00610000 00010000 "firmware"
mtd3: 000d7e88 00010000 "kernel"
mtd4: 00538178 00010000 "rootfs"
mtd5: 000d0000 00010000 "rootfs_data"
mtd6: 00010000 00010000 "caldata"
mtd7: 00190000 00010000 "unknown"
mtd8: 00010000 00010000 "caldata_copy"

[anonymous]

-seems like you have a "caldata" partition, but "no valid calibration data found in caldata" indicates that it is not correct
I would copy "caldata_copy" to "caldata" and try again
If still does not work maybe your "caldata" is corrupted....wrong data or wrong format

[bolvan]

As far as I remember on my system caldata_copy was blank initially. I copied caldata to it.