Upgrade/Downgrade VAG ECU software version with VAS and Odis_E

**kitnoos2002** · 30th December, 2016, 12:55 AM

Hello,
I want to upgrade software version on VAG ECU with VAS5054A and Odis_E.
For example if I upgrade from FL_03L906023LC_8806 to FL_03L906023LC_9977 :

1) Do I have to make adaptations or other things after doing an upgrade ?
2) Same question for downgrade (to get latest software before dieselgate) ?

Thank you very much !

**dimitar** · 30th December, 2016, 09:40 PM

Some units loose coding
for others need to make adaptations and basic settings
always make a full autoscan backup with vcds

**smirnoff_rules** · 30th December, 2016, 09:51 PM

the good thing is that even if that dosnt work you have the program to upgrade f/w again

be very interested to see if this works , have a few customers with later f/w that l have put off remapping

l have a feeling odis will not let you downgrade , might need to rename the file to make it think its the newer one ?

**kitnoos2002** · 31st December, 2016, 12:54 AM

With FGTech_0475 I have written successfully Original.bin extracted from Original.sgo.
Tested with same ecu software version than installed on the car badly remapped.
100% OK.

Will this procedure also work with a different ECU software version than installed on the car ? (with .bin extracted from .sgo)

**smirnoff_rules** · 31st December, 2016, 12:58 AM

are you trying to recovery an ecu ! like pcr2.1

**kitnoos2002** · 31st December, 2016, 01:26 AM

No but I just want to understand how it works.
I did a PCR2.1 three days ago and everything worked perfectly with FGTech_0475 !

**smirnoff_rules** · 31st December, 2016, 11:32 AM

lm the same , any idiot can flash a car but they cant recover a problem , shame there isnt a video somewhere showing the flashing with offline cracked software , read the readme and looks easy to recover and then be able to flash or unlock again , but l have a spare ecu l killed just to test if it can be recovered on the table but dont think or known if thats possible with Odis_E

pcr2.1 is a scary ecu , want to know as much as possible about recovery

**offsystem** · 31st December, 2016, 04:36 PM

AS I know Not all odis e versions are having offline flashing option

**vanos batam** · 31st December, 2016, 07:48 PM

You can do.. first step you need backup the coding.
after uprade you will lost the coding then you upload backup coding..

**hid3** · 1st January, 2017, 01:14 PM

Sorry for a bit of offtopic question, but is the version '9977' for given ECU an update to address the DieselGate issue or is it some other update prior to that?

Thanks.

**chrisi1909** · 3rd January, 2017, 12:36 PM

9977 + 9978 are Dieselgate SW for that ECU

**hid3** · 3rd January, 2017, 02:08 PM

Originally Posted by chrisi1909

9977 + 9978 are Dieselgate SW for that ECU

Thanks for information!
Also, any ideas if there were any updates between 9972 (non G.D. related) till 9977 (D.G. fix)?
I might want to ask the dealership to flash the latest one pre-DieselGate for best performance and to get the most recent fixes

Thanks a lot!

**offsystem** · 3rd January, 2017, 05:10 PM

Dealer will just Flash you latest Version which he get from SVM Server.

Gesendet von meinem ALE-L21 mit Tapatalk

**hid3** · 3rd January, 2017, 06:47 PM

Ha ha, good point on that!
Luckily there seems to be a guy locally who has got some Chinese knock-off VAS tool. He told me that his software database is dated 2016-06.
Hope with assistance from him it'll be possible to select which version to flash.
These forums are a great resource of information and experience.
Thanks guys for sharing.

**jakesman** · 3rd January, 2017, 09:29 PM

in odis-e ther some where is a tick box that u can tick or untick to not check the file version , so with odis u can go down and up in SW normaly odis say the file u want to write is older and do not want to write , but with thre tick box it posable i think under " admin . settings "