[apoelistas]

Hello everyone

It is possible any way to backup actual installed firmware from car systems (VW Passat CC) like motor, transmission, climate control and ect.

You can backup coding from the modules via OBD port using VCDS.
But why do you want to backup your current firmware?No need to back it up as you can just make a note of your current software versions on your modules and you can revert back anytime using ODIS engineering(vis VAS5054a) and flash files from VAG Flash disc.

Hi. Because Im not able to find 0709 firmware for this block:
Address 08: Auto HVAC (J255) Labels: 5K0-907-044.clb
Part No SW: 5K0 907 044 CC HW: 5K0 907 044 CC
Component: Climatronic H15 0709
Revision: 00003001
Coding: 0000000002
Shop #: WSC 05311 115 00000
ASAM Dataset: EV_Climatronic A01006
ROD: EV_ClimaAutoBasis_VW36.rod
VCID: 6ECBD8A3E097FCF2FD2C68D-803B

After update on firmware 1012 don't work front heat for seat. Coding and adaptation do not help.
Update was performed with into from vag-flashinfo.kluthr.de
5K0907044CC @ 0709 to 5K0907044CC via FL_5K0907044_T_1012.frf

Address 08: Auto HVAC (J255) Labels: 5K0-907-044.clb
Part No SW: 5K0 907 044 CC HW: 5K0 907 044 CC
Component: Climatronic H15 1012
Revision: 00003001
Coding: 0000000002
Shop #: WSC 12345 123 12345
ASAM Dataset: EV_Climatronic A01010
ROD: EV_ClimaAutoBasis_VW36.rod
VCID: 6ECADFDBE097FCF2FD2C68D-803B

some theory
Well having a newer firmware does not mean that it is compatible always with your hardware version. some hardware use same software but newer firmware numbers (e.g. facelift) this is why you usually need to read TPIs. as a rule thumb you should not apply latest firmware to the following: comfort unit, radio concert. In addition my engine control module was flashed with a different firmware name (svm) so if you want to flash offline you need the TPI information. Not everything is black or white.


back to trouble shooting:
having some similar issues you should try to change some codings and apply.

then change codings back to original values and reapply.

test if this fixes your issue. This worked for me a couple of times.
it is a firmware update glitch.

2. if above does not work check codings. some codings options may have changed and you need to choose the correct seat heating coding.

3. check fuse of seat heating

4.. if the above do not work, but first do steps 1,2,3, check if there are older firmwares between your older and newer and reflash.

Having flashed my HVAC to latest was fine even though TPI was only applicable to later MY audi B8s but still same family (B8). Actually there was a higher number than in TPI (one number higher) also available than what was mentioned in the TPI so I flashed with newest but was very near to number mentioned in the TPI. NOTE BECAUSE THERE WAS NO RHD FIRMWARE I USED LHD BUT HARDWARE WAS SAME AFTER VISUAL EXAMINATION. @Sixcode recommendation was visual exam.

Also flashed PDC control module with newer firmware part name made a year later still for B8 and was ok (different hardware PN) but will not try this again because its risky. Same PR-code though and same specs.