Bricking and Unbricking device

[erdem_ua]

You are along that your are doing. I don't want to say anything that I don't know well. But I can say that using SquashFS different than v3.0 will brick your device. I think your problem is not related with LExxB650. You can search help with new topic like SquashFS image compilation, at support area...

[aquadran]

And now I really really need your help.
Yes yes. It's bricked .

Before flashing /dev/bml0/6 with my own modified image I've tried to erase and restore this memory. And guess what. Erase ended successful but restore process was simply executed after "bml.restore /dev/bml0/6 /mtd_swu/dump6.img.orig" command. Progress bar or something like that didn't show. And now TV is trying to start (red diode blinks) and reboot.


I've made service cable, and debug is on. During boot process communicate is:

>> ONBOOT :: 0x59a50219 0x12821282
Kernel panic - noc syncing: VFS: Unable to mount root fs on unknown-block(139.6)

I'm affrayed that I'm fu...d up :/ Recovery method can not be made if no file system is mounted I'd be happy if I'm wrong

HELP ... PLEASE...

you still can restore if watchdog is turned off.
enter bootloader and restore rootfs
or if watchdog is on boot over nfs root to shell and restore rootfs from there.

[aquadran]

Ok but how to enter botloader? I'm trying to stop boot proces without success.

http://wiki.samygo.tv/index.php?title=G ... bootloader

[erdem_ua]

I expect this, I said you that don't update rootfs with that way, instead flash it via TV's own menus l?ke standard update.
I guess this happens because there is no bml.restore file to call, because there is no-root partition.
Anyway don't make panic, you can recover it via uboot.
After unbrick please fill this wiki page
Good luck.

[aquadran]

Oh.. It might be helpful ? but what kind of files should I put to NFS server to boot up TV. Only dev/btl0/6 image? If I manage to get my Sammy back alive I?ll post solution tutorial.

it should be enough.
However you need also uImage kernel file.
I just uploaded into download page. https://sourceforge.net/projects/samygo ... p/download

in uboot cmd line do:

setenv ipaddr 192.168.1.2;setenv gatewayip 192.168.1.1;setenv serverip 192.168.1.1;setenv bootargs root=/dev/nfs rw nfsroot=192.168.1.1:/stuff/samsung/rootfs,nolock ethaddr=00:01:02:03:04:05 ip=::::::dhcp console=ttyS1;tftp;bootm

replace 192.168.1.2 with your tv ip
192.168.1.1 nfs server
replace /stuff/samsung/rootfs with your nfs server path.
replace mac ethaddr=00:01:02:03:04:05
you need dhcp server working too in this "ip=::::::dhcp" if you have static you need adopt it.

check also what you have in /etc/rcS, /sbin/init will execute at boot
you can erase it and add only /usr/sbin/telnetd

you also need tftp server too where at root of service you put uImage kernel.