1. Microtronik Autohex II and Hexprog forum
  2. Autohex II BMW
  3. Autohex II DME/DDE and CAS ISN
  4. CAS SOFTWARE DOWNGRADE
Justin
  •  Justin
  • 100% (Exalted)
  • Advanced Member Topic Starter
2016-05-25T09:54:13Z
Hi

When CAS modules need firmware downgrades in order to read the CAS ISN, how safe is it?

What are the chances of damaging the CAS whilst doing this?

Autohex give a warning message that ' the CAS may be unusable after the process, and a back-up of the CAS should be done' before the process.

So my question is, how safe is it and what are the chances of damaging bricking the CAS so that it cannot be used again?

Thanks
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Autohex_II_BMW
2016-05-25T14:08:37Z
For CAS with part number: 938XXXX and 939XXXX you will get this warning message (4 parts numbers only) because this CAS with EWS5 security. Other parts numbers (Like 928XXXX,927XXXX and 926XXXX) are 100% safe (EWS4 Security).
Anyway, If you have a BDM tool, don't worry...just go forward. what ever will happen, we can recover it for you.
Cheers
Levanime
2016-06-10T02:53:24Z
which BDM would you recommend to work with CAS?
Autohex_II_BMW
2016-06-10T16:23:56Z
This depends on your budget, there are many recommended BDM tools, please google it and read some reviews.
mehmet61
2016-06-15T08:54:14Z
After programming with latest ISTA P or autohex
CAS Software get EWS5 Security
After "CAS SOFTWARE DOWNGRADE"
CAS NO longer works
Justin
  •  Justin
  • 100% (Exalted)
  • Advanced Member Topic Starter
2016-06-15T09:33:24Z
Hi

Have you had a problem with this?

I am very reluctant to downgrade CAS when prompted to do so, i did one on the bench a couple of months ago and the CAS died.

It seems to be a big problem.
Autohex_II_BMW
2016-06-15T18:34:04Z
When CAS is EWS5, Autohex II prompts you to make a backup before you do CAS firmware.
Anyway, it is solvable , Contact support to fix this issue
mehmet61
2016-06-15T21:31:52Z

I think support is on holiday
Have 11 June sent 2 emails still no answer
Autohex_II_BMW
2016-06-17T12:08:44Z
We are answering all emails within 24 hours
Please send your email again, I think you did not get our answered email.
mehmet61
2016-06-21T15:53:11Z
Solved
Thanks
Justin
  •  Justin
  • 100% (Exalted)
  • Advanced Member Topic Starter
2016-06-21T18:31:48Z
Hi

How did you solve it?
Autohex_II_BMW
2016-06-21T19:25:20Z
We helped him :)
Hope all users are happy with support.
Tibibond
2016-07-09T20:36:35Z
i used autohex to replace a dde on x6 m50d. i did get warning on cas but the downgrade worked flawless and i wrote the isn to dde without hassle. i did try to use for this job initially abritus but it couldn't extract isn from dde, so i borrowed from a friend autohex. it was a breeze to do the job. my friend asked autohex if dde is supported and after this we have done the job. the support is much better. can't wait to get my own autohex!!!
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  1. Microtronik Autohex II and Hexprog forum
  2. Autohex II BMW
  3. Autohex II DME/DDE and CAS ISN
  4. CAS SOFTWARE DOWNGRADE