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andydazz
08-03-2020, 10:31 PM
I have Scott Contessa 2013, after I Upgrade the firmware, the bike can't ****ing. The Spec like this :

RD Shimano RD 6770 20 Speed
FD Shimano FD 6770
Shifter Shimano Ultegra ST 6770 20 Speed
Junction box SM-EW67 A-E
Batter External SM BTR1

Maybe somebody can help me to solve the problem, I arlready read at the forum must downgrade but I can't find the old version.

Thank Before
robt57
08-03-2020, 11:07 PM
Hook up just the battery and update it by itself, then all of it connected. Connect the interface last always. May or may not work.

That said I never plug my sm-pce1 into a PC that is on the internet for 6770 anymore...
andydazz
08-04-2020, 12:39 AM
Hook up just the battery and update it by itself, then all of it connected. Connect the interface last always. May or may not work.

That said I never plug my sm-pce1 into a PC that is on the internet for 6770 anymore...

I already try only the battery connect to PCE 1 but using internet, now what should I do ?

Downgrade all ? how ? or only the battery ?
robt57
08-04-2020, 01:07 AM
I already try only the battery connect to PCE 1 but using internet, now what should I do ?

Downgrade all ? how ? or only the battery ?

Not sure actually.
stien
08-04-2020, 05:17 AM
Pm Look585, he’s the di2 FW guru.
andydazz
08-04-2020, 06:37 AM
pm look585, he’s the di2 fw guru.

tq
Look585
08-04-2020, 08:20 AM
This should help. Links to instructions and the proper 6770 firmware file. The downgrade process is a bit clunky so read the instructions carefully.

You are going to "trick" the upgrade process by renaming an older firmware file to appear as a newer release. Then the eTube software thinks it is time to upgrade and installs the older firmware. There is a file for each component, and some have two. You need to rename them all.

https://forums.thepaceline.net/showpost.php?p=2467333&postcount=5
andydazz
08-04-2020, 08:59 AM
This should help. Links to instructions and the proper 6770 firmware file. The downgrade process is a bit clunky so read the instructions carefully.

You are going to "trick" the upgrade process by renaming an older firmware file to appear as a newer release. Then the eTube software thinks it is time to upgrade and installs the older firmware. There is a file for each component, and some have two. You need to rename them all.

https://forums.thepaceline.net/showpost.php?p=2467333&postcount=5

Ok I will read and try it, thanks for your information.