109633cp wrote:
不知是否聽說用6770煞變把,配6870前變和後變,不能去更新電池/座韌體?(升級11速較省錢的做法)
有店家就這樣搭配,更新後造成電池被鎖住,系統整個無法動作(更新前系統正常)
韌體更新後是否無法回到較舊的版本?
gojuanes :
"Im new to the forum and Di2,... I got my DI2 installed today at the LBS and it worked without issues. Then I got home and downloaded the E-tube Project software in order to configure the shifting of the FD and add multi shift mode to the RD. after downloading the software it prompt me to update firmware for the battery (internal) and the junction box (5port). After that when running the connection check it told me that the FD 6870 and my RD 6770 are not in the same compatible group and it didn't allow me to move forward. After that my bike stopped shifting and it doesn't work anymore.
I kept playing around and found out that if I unplug either the FD or the RD then it allows me to set up in e-tube project and it also allows me to shift with the derailleur that is currently connected.
So at this point I can only operate one derailleur at a time when a few mins before I was able to operate both without issues (before the software).
Any idea why is this happening?,... I know the FD 6870 and RD 6770 are not in the same compatible group but it should still work and it was working before."
MMsRepBike :
"You're screwed.
I'm a Di2 technician so I can help a little bit. Your error was plugging in your mashup system into the E-tube project software and updating everything.
If you would have left E-tube at the 2.5.2 version instead of updating to 2.6 you might have been okay. The problem happened when you updated your battery to 3.0.5.
6770/6870 mashups are currently NOT compatible with the latest E-tube project updates and firmware updates. Now that you've upgraded the firmware on your battery, your system will not work and there's nothing you can do about it.
What you will need to do to make it work as is is to get a different battery. An old battery that has not had it's firmware updated yet.
Or of course you can just get all the right parts, meaning a 6870 front derailleur. I'm a Shimano employee and have access to all of the warehousing and it's not a nice picture. You may be running the 6770 simply because Shimano America doesn't have any FD's in stock for 6870. We haven't for a good part of the year and we won't for a while. Actually we're backordered though the end of September right now.
So like I said, you're screwed. Stay away from the software until all of your components are the same and until then find yourself either an old, un-updated battery or a new 6870 FD. Those are the only ways to fix this."
Adam_X :
"MMS, is it possible to uninstall his current e-tube software and revert back to a previous version...then reapply firmware?"
MMsRepBike :
"No.
Yes, you can uninstall the 2.6 software, but you cannot flash the battery back to a previous firmware version. That battery is no longer compatible with mashup systems. Well, unless Shimano changes things, but as of today it cannot be reverted.
Our shop has two dedicated E-tube computers right now because of this. We have one with the old 2.5.2 on it that we use for mashup systems and we have one with 2.6 that we use for everything else.
Shimano simply wants us all to upgrade and to not mix and match. But this is life so we do what we have to to make things work. Our shop probably has 10 bikes or so that started as 10 speed that we converted to 11 by only swapping the RD, cassette and chain. They all run the old Ultegra wiring harness instead of the new junction A boxes. Shimano has discontinued that old harness and is no longer supporting it, but our customers don't want to upgrade if they don't have to, so we don't make them, we make it work. "
* All text copied from roadbikereview.com
