How to downgrade D6200 ?

[juusso]

1) disable all scripts inside /mnt/etc/init.d/ (simply rename by adding .dis at the end) but leave enabled:
01_01_catch_crap.init
06_05_apache.init

2) Delete ERROR.log
3) Reboot TV, wait few minutes, check log

Might you have exlink cable?

[Elysium]

unfortunately I do not have sry the cable.
ERROR.log

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/mtd_rwcommon/widgets/user/SamyGO/SamyGO/etc/init.d/01_01_catch_crap.init failed to execute

[juusso]

really weird issue. Let`s stop for today, have to think...

[Elysium]

ok, I wish you a good night and many thanks

[juusso]

One more before you go sleep:
1. download this 01_01_catch_crap.init, unzip it and upload to TV via ftp. Overwrite existing one. Please do not edit this file, just unzip, upload (use binary mode of your ftp client), overwrite.
2. reboot, wait 5 min and check netcat shell on 3023 port. Nb, you do not have to get any response when connected, look at the video, no echo, no welcome from TV on netcat, just empty row waiting for your next input.

for example, when you connect, you get something like this:

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root@[TV]UE40D6500 /> nc 192.168.1.202 3023

And nothing else. But if you input some command, like

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ls -la

after you enter you get response from TV:

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root@[TV]UE40D6500 /> nc 192.168.1.202 3023
ls -la
drwxr-xr-x   27 root     0              695 May 17  2012 .
drwxr-xr-x   27 root     0              695 May 17  2012 ..
lrwxrwxrwx    1 root     0               10 Jun 11  2012 .info -> /dtv/.info
-rwxr-xr-x    1 root     0               51 Mar 25  2011 .version
lrwxrwxrwx    1 root     0               12 Jun 11  2012 Java -> mtd_exe/Java
drwxrwxrwx    2 root     0             1320 Nov 18  2012 bin
drwxrwxrwt    2 root     0               40 Jan  1 00:00 core
drwxrwxrwx   11 root     0             4862 Dec 19  2010 dev
drwxrwxrwt    2 root     0               40 Jan  1 00:00 dsm
drwxrwxrwt    7 root     0              640 Jan  1 00:00 dtv
drwxr-xr-x    3 root     0              238 Mar  1  2013 etc
drwxr-xr-x    2 root     0                3 Apr  2  2012 home
drwxrwxrwx    3 root     0              393 Jan 13  2011 lib
lrwxrwxrwx    1 root     0               11 Jun 11  2012 linuxrc -> bin/busybox
drwxr-xr-x    2 root     0                3 Apr  2  2012 media
drwxr-xr-x    1 root     0                0 Jan  1 00:36 mnt
lrwxrwxrwx    1 root     0                8 Jun 11  2012 mtd_appdata -> mtd_exe/
drwxr-xr-x   11 root     0              167 Aug 16  2011 mtd_appext
lrwxrwxrwx    1 root     0               12 Jun 11  2012 mtd_boot -> etc/Scripts/
lrwxrwxrwx    1 root     0               10 Jun 11  2012 mtd_chmap -> mtd_rwarea
lrwxrwxrwx    1 root     0                7 Jun 11  2012 mtd_cmmlib -> mtd_exe
drwxr-xr-x    1 root     0                0 Jan  1  1980 mtd_contents
lrwxrwxrwx    1 root     0               12 Jun 11  2012 mtd_down -> mtd_rwcommon
drwxr-xr-x    1 root     0                0 

[Elysium]

juhu it works

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drwxr-xr-x    1 root     0               0 Jan  1 00:00 .
drwxr-xr-x    1 root     0               0 Jan  1  1980 ..
-rwxr-xr-x    1 root     0              92 Jan  1  1980 ERROR.log
-rwxr-xr-x    1 root     0               0 Jun 13  2011 SGclp
-rwxr-xr-x    1 root     0               0 Jun 13  2011 SGclpSDL
-rwxr-xr-x    1 root     0            1478 Jun 13  2011 SamyGO.dat
-rwxr-xr-x    1 root     0          131772 Jun 13  2011 SamyGO.png
drwxr-xr-x    1 root     0               0 Nov  2  2011 bin
-rwxr-xr-x    1 root     0             995 Nov  2  2011 clmeta.dat
drwxr-xr-x    1 root     0               0 Nov  2  2011 doc
drwxr-xr-x    1 root     0               0 Jan  1  1980 etc
drwxr-xr-x    1 root     0               0 Nov  2  2011 firmware
drwxr-xr-x    1 root     0               0 Nov  2  2011 lib
drwxr-xr-x    1 root     0               0 Nov  2  2011 mc
drwxr-xr-x    1 root     0               0 Sep 22  2013 opt
drwxr-xr-x    1 root     0               0 Nov  2  2011 phpsysinfo
-rwxr-xr-x    1 root     0            3797 Nov  2  2011 rcSGO
-rwxr-xr-x    1 root     0             173 Jan  1  1980 samygo.log
drwxr-xr-x    1 root     0               0 Nov  2  2011 sbin
drwxr-xr-x    1 root     0               0 Nov  2  2011 src
drwxr-xr-x    1 root     0               0 Nov  2  2011 usr

[juusso]

I believe ir worked all the time... You can check port 2023 too...

Your further steps:

• First install latest samyGOso as usual, if needed.
• Execute

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  . /dtv/SGO.env
  
  samyGOso -p $(pidof exeDSP) -l /mnt/opt/privateer/usr/libso/libFWdowngrade.so -r

• downgrade through USB in regular way. Use any lower firmware you need. E.g. T-GAS6DEUC-1014

[Elysium]

good day.
have tried several times today but unfortunately without success.
he loads it to 1% and then aborts with the error message: error during the update. check and try again.

[juusso]

Are you sure your USB key is OK and firmware file is not corrupted? Try same procedure with some different USB keys. Also check /dtv/usb/FWdowngrade.log or /mtd_rwarea/FWdowngrade.log

[Elysium]

unfortunately already tried everything, even the usb stick formatted differently.
log files are missing.