Bricking and Unbricking device

[erdem_ua]

So that was one of adviced methods. Now we know that it's impossible to flash /dev/bml0/6 at running system. Probably from boot menu it might be wiser.
As soon as I come back home I?ll try this method.
Few questions:
Should I unsquash my image to shared NFS directory, or keep it in compressed format, or mount read-only file system?
In this field ?ip=::::::dhcp? I should put dhcp Server IP address ?
TFTP server must be at the same IP as NFS server?
uImage mounted, uncompressed, or in image format ?

Yes, but I don't advice that flashing root while system is unstable because of unmount Anyway, you can recover your TV (it looks you needed little help.)
This Topic is needed to be split for Unbricking process and flash failure...

[aquadran]

erdem_eu You said:

Other approach is updating the /dev/bml0/6 partition. For doing that,
*you needed to dump your root image
*move that image to your PC
*modify it via SquashFS/FAT image
*and flash your flash chip.
*pray to god.( Always needed specially while doing critical things)

I haven't try unmount root partition before. I don't know what happens. First try it.
AFAIK, TV's firmware update process doesn't unmount that device before flashing.
You needed to stop watchdog before. And you have to know that If you make a mistake in new/modified firmware, than your TV could be bricked. It's probably could recoverable. But It's better to have all partitions image as a backup.

So that was one of adviced methods. Now we know that it's impossible to flash /dev/bml0/6 at running system. Probably from boot menu it might be wiser.
As soon as I come back home I?ll try this method.
Few questions:
Should I unsquash my image to shared NFS directory, or keep it in compressed format, or mount read-only file system?
In this field ?ip=::::::dhcp? I should put dhcp Server IP address ?
TFTP server must be at the same IP as NFS server?
uImage mounted, uncompressed, or in image format ?

yes, unsquash image to shared nfs directory and it could be readonly filesystem, doesn't matter.
from you wrote you have dhcp server, nothing to change keep as it is ?ip=::::::dhcp?
yes, as uImage file in tftp server.
the same ip address regarding tftp and nfs. I have a same host. I'm not sure what is needed to change in uboot env right now. If necessary I can check this.

[erdem_ua]

Please check connection speed, port, error, stop bits. You can reconnect but needed to relax. Might be try again after good sleep.