Help to downgrade B550

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juusso
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Re: [How-To] Roll back LExxB5xx, LExxB62x, UExxB6xxx

Post by juusso » Tue Oct 16, 2012 5:12 pm

Do you have ExLink already? Connect it and check u-boot acces or/and shell.
LE40B653T5W,UE40D6750,UE65Q8C
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FFB (v0.8), FFB for CI+ . Get root on: C series, D series, E series, F series, H series. rooting K series, exeDSP/exeTV patches[C/D/E/F/H]

DO NOT EVER INSTALL FIRMWARE UPGRADE

ZeroZorro
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Joined: Tue Mar 27, 2012 3:34 pm

Re: [How-To] Roll back LExxB5xx, LExxB62x, UExxB6xxx

Post by ZeroZorro » Tue Oct 16, 2012 5:16 pm

So, this result is not good is it?

I think the fact there is some 'activity' is okay, but what know?
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ZeroZorro
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Joined: Tue Mar 27, 2012 3:34 pm

Re: [How-To] Roll back LExxB5xx, LExxB62x, UExxB6xxx

Post by ZeroZorro » Tue Oct 16, 2012 5:21 pm

I connected the Ex-link cable, started Putty (admin mode) and turn on the TV (with the remote)
I see a lot of activity like the attached image in previous post in my terminal screen.
After that, the tv is on and if i use my remote it gives this 'rubbish' on the Putty-terminal
If i try to type 'debug' in the terminal it's the same.
Last edited by ZeroZorro on Tue Oct 16, 2012 5:23 pm, edited 1 time in total.

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juusso
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Re: [How-To] Roll back LExxB5xx, LExxB62x, UExxB6xxx

Post by juusso » Tue Oct 16, 2012 5:23 pm

this, what you get most probably is because wrong connection parameters. (speed?)
You have to get readable text.

Try to change encoding (putty- window -translation - UTF8)
LE40B653T5W,UE40D6750,UE65Q8C
Have questions? Read SamyGO Wiki, Search on forum first!
FFB (v0.8), FFB for CI+ . Get root on: C series, D series, E series, F series, H series. rooting K series, exeDSP/exeTV patches[C/D/E/F/H]

DO NOT EVER INSTALL FIRMWARE UPGRADE

ZeroZorro
Posts: 20
Joined: Tue Mar 27, 2012 3:34 pm

Re: [How-To] Roll back LExxB5xx, LExxB62x, UExxB6xxx

Post by ZeroZorro » Tue Oct 16, 2012 5:46 pm

okay thanks, will try again, the setting i used:

Serial Com1
Speed 115200
Data Bits 8
Stop Bits 1
Parity None
Flow Control None

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juusso
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Re: [How-To] Roll back LExxB5xx, LExxB62x, UExxB6xxx

Post by juusso » Sat Oct 20, 2012 8:20 am

what is your result?
LE40B653T5W,UE40D6750,UE65Q8C
Have questions? Read SamyGO Wiki, Search on forum first!
FFB (v0.8), FFB for CI+ . Get root on: C series, D series, E series, F series, H series. rooting K series, exeDSP/exeTV patches[C/D/E/F/H]

DO NOT EVER INSTALL FIRMWARE UPGRADE

ZeroZorro
Posts: 20
Joined: Tue Mar 27, 2012 3:34 pm

Re: [How-To] Roll back LExxB5xx, LExxB62x, UExxB6xxx

Post by ZeroZorro » Sat Oct 20, 2012 8:55 am

This is what i get now
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juusso
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Re: [How-To] Roll back LExxB5xx, LExxB62x, UExxB6xxx

Post by juusso » Sat Oct 20, 2012 8:59 am

Somehow i think your cable is not ok. Have you tried to make loopback test?
Working exlink cable is the key to success.
LE40B653T5W,UE40D6750,UE65Q8C
Have questions? Read SamyGO Wiki, Search on forum first!
FFB (v0.8), FFB for CI+ . Get root on: C series, D series, E series, F series, H series. rooting K series, exeDSP/exeTV patches[C/D/E/F/H]

DO NOT EVER INSTALL FIRMWARE UPGRADE

ZeroZorro
Posts: 20
Joined: Tue Mar 27, 2012 3:34 pm

Re: [How-To] Roll back LExxB5xx, LExxB62x, UExxB6xxx

Post by ZeroZorro » Sat Oct 20, 2012 9:36 am

juuso wrote:Somehow i think your cable is not ok. Have you tried to make loopback test?
Working exlink cable is the key to success.
I will try that tonight, wrong cable good bee the issue. I'll search for a way to do a loopback test and report back...
Thanks again!

ZeroZorro
Posts: 20
Joined: Tue Mar 27, 2012 3:34 pm

Re: [How-To] Roll back LExxB5xx, LExxB62x, UExxB6xxx

Post by ZeroZorro » Sat Oct 20, 2012 3:24 pm

I did the loop-back test en while in Putty i typed the 26 chars of the alphabet, this screen is the result of that.

:?: not good enough i guess?
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