[How-To] Rollback on old FW...

[juusso]

you`ve surprised me (in bad meaning).

I think, you bricked TV because:

either:

• you used not the latest version of FFB (versions under 0.5) and you used wrong images (from other TV models) to restore

or:

• You used patched firmware and you got some errors during patching process. If you ignored errors and flashed it - it could cause TV brick.

Here are a lot of safety checks in FFB and flashing images from other models is (almost) impossible, just if patcher error occured.
I need all log files from USB you got. And more detail explanation what have you used and what have you did, to understand what went wrong and help you.

[juusso]

It could be, you flashed pre-patched firmware and it has errors... I hope you added files from archive [T-CHLDEUC]-u-boot.bin,[T-CHLDEUC]-fnw.bin and [T-CHLDEUC]-Image first time you used FFB? I think - yes, because you got it finished. Then prepare exlink cable, god, unpatched firmware and read a bit this thread. It is better to wait my assistance step by step, because if you aren`t good in linux, you could brick it totaly. I think you did not read instruction, because you`ve deleted log files from usb...
I edited FFB instructions for mandatory usage of original, not patched firmware for rollback process already .

I think you red this from readme file and how-to:

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IF NO SUCCESS OR TV BRICKED 

- TV rebots on any error during downgrade procedure ("set -e" mode for script).
- Look at _FFBlog.log, _debug.log and sysinfo.log, ask for help on samygo.tv forum:
  http://forum.samygo.tv/viewtopic.php?f=2&t=1310
- After error reboot TV starts to currently active (februar) firmware. 
- Try use another USB disk, download firmware from another source...

FOR TV repair you need
* ExLink cable: http://wiki.samygo.tv/index.php?title=Enable_Serial_Console_on_non_CI%2B_Devices
* Read carefully wiki articles:
http://wiki.samygo.tv/index.php?title=Recovery_of_Bricked_Device
http://wiki.samygo.tv/index.php?title=Playing_with_Firmware_Images#Decryption.2FEncrpytion_of_Image
http://wiki.samygo.tv/index.php?title=Repair_TV_from_u-boot
* Ask for help in samygo.tv forum:
http://forum.samygo.tv/viewtopic.php?f=2&t=1310

I think in your case we could just activate alternative (previous good) firmware by changing PartitionSwitch_*_* over console.
I need output from console to commands:

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ls -l /mtd_rwarea/PartitionSwitch*

and

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cat /mtd_rwarea/Version*

and

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df -h

Sure, i need an ExLink output from the start of TV.

[juusso]

Yes, you can revert to previous 3000 firmware. Your TV is CI+ and only one way is left:
ActivateAlternative firmware tool from Content library or script over telnet console.

[juusso]

windows is ok. Format pen to fat32

[PiterEL]

Can someone post a step by step how to upload the old firmware LE52B750U1WXXH 2005 SamyGo now having uploaded the original soft samsung T-CHL7DEUC-3001.1
I would like to be able to use additional applications samygo and most of the media viewing SAMBA. Samygo extension that fits the model LE52B750U1WXXH

[juusso]

use FFB