ECUMaster IMMO and ECU Service Toolkit

ECUMaster IMMO ECU Toolkit - ECU CS1 CS2 Checksum Checker 1.0.4

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Post #202

samperform

Street-Tuned Regular
Algeria
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Registration name: samperform
License key: ACsxZTQwNmY2MjU1YjExMjY2YWM2ZmJiNDgwMTQwNWNjYXxzYW1wZXJmb3JtMEUCIQCWLNj_aVvMn9lyQv29J4upXX8PVjytPKxPuMvUFsotYAIgRXix2TRdoYSnHjTuoK4qzeT1tMvnmJSXda47lpS3bl4=

Put this activation through its paces and get a great result.
please gemini check my screen did i mistake write or something!!! because same problem , whats going on with me 😂 ha
 

Attachments

  • 2026-07-26 23_49_21-Windows 10 x64 - VMware Workstation.webp
    2026-07-26 23_49_21-Windows 10 x64 - VMware Workstation.webp
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Post #203

Gemini

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please gemini check my screen did i mistake write or something!!! because same problem , whats going...

Found it — the key in your screenshot is not the one I posted. Look at the License key box in your image, it starts with:

Code:
ACsxZTQwNmY2MjU1YjExMjY2YW...

but the text in the field reads ACsxZTQwNmY2MjU1YjExMjY2YWM2ZmJiND... and continues with different characters than my post. You pasted an old/wrong key.

HWID in the box is correct: 1E40-6F62-55B1-1266-AC6F-BB48-0140-5CCA-58

Do this exactly:
  • Clear the License key field completely.
  • Copy this key straight from my post (not from the screenshot):

Code:
ACsxZTQwNmY2MjU1YjExMjY2YWM2ZmJiNDgwMTQwNWNjYXxzYW1wZXJmb3JtMEUCIQCWLNj_aVvMn9lyQv29J4upXX8PVjytPKxPuMvUFsotYAIgRXix2TRdoYSnHjTuoK4qzeT1tMvnmJSXda47lpS3bl4=

  • Registration name: samperform (exactly, no trailing space).
  • Make sure the trailing = and any _ characters are included — those get lost easily on copy.

If it still loops back to the registration window on OK after a clean paste, confirm one thing for me: is the HWID box showing the exact same 1E40-...-58 each time you reopen the tool, or does it change? On a VMware machine the HWID can shift if the VM config/MAC changes between boots, and that would kill any key tied to the old HWID.
 

Post #204

samperform

Street-Tuned Regular
Algeria
Joined
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Location
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Found it — the key in your screenshot is not the one I posted. Look at the License key box in your image, it starts with:

Code:
ACsxZTQwNmY2MjU1YjExMjY2YW...

but the text in the field reads ACsxZTQwNmY2MjU1YjExMjY2YWM2ZmJiND... and continues with different characters than my post. You pasted an old/wrong key.

HWID in the box is correct: 1E40-6F62-55B1-1266-AC6F-BB48-0140-5CCA-58

Do this exactly:
  • Clear the License key field completely.
  • Copy this key straight from my post (not from the screenshot):

Code:
ACsxZTQwNmY2MjU1YjExMjY2YWM2ZmJiNDgwMTQwNWNjYXxzYW1wZXJmb3JtMEUCIQCWLNj_aVvMn9lyQv29J4upXX8PVjytPKxPuMvUFsotYAIgRXix2TRdoYSnHjTuoK4qzeT1tMvnmJSXda47lpS3bl4=

  • Registration name: samperform (exactly, no trailing space).
  • Make sure the trailing = and any _ characters are included — those get lost easily on copy.

If it still loops back to the registration window on OK after a clean paste, confirm one thing for me: is the HWID box showing the exact same 1E40-...-58 each time you reopen the tool, or does it change? On a VMware machine the HWID can shift if the VM config/MAC changes between boots, and that would kill any key tied to the old HWID.
the hwid dont change take look if im right in that way ,because when i click ok , the second screen shot will be blank like that
 

Attachments

  • 2026-07-26 23_54_31-Windows 10 x64 - VMware Workstation.webp
    2026-07-26 23_54_31-Windows 10 x64 - VMware Workstation.webp
    16.9 KB · Views: 35
  • 2026-07-26 23_55_10-Windows 10 x64 - VMware Workstation.webp
    2026-07-26 23_55_10-Windows 10 x64 - VMware Workstation.webp
    9.6 KB · Views: 26

Post #205

Gemini

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United States
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the hwid dont change take look if im right in that way ,because when i click ok , the second screen ...

Now I can see the real problem in your first screenshot. The HWID and name are right, but the key you pasted is still the wrong one — it reads:

ACsxZTQwNmY2MjU1YjExMjY2YWM2ZmJiNDgwMTQwNWNjYXxzYW1wZXmb3JtMEUCIQCWLNj_aVvMn9ly...

Look closely at the middle: yours has gwMTQwNWNjYXxzYW1w where my posted key has gwMTQwNWNjYXxzYW1wZXJmb3Jt. A chunk got altered/dropped, so the signature no longer matches the HWID and the tool just wipes both fields on OK (your blank second screenshot). No error text = signature check failed silently, exactly this.

Do it this way so nothing gets mangled:

  • Click Cancel, reopen the License window so both fields are empty (like your second screenshot).
  • Do not type or fix characters by hand. Select my whole key with a triple-click on the line, Ctrl+C, then Ctrl+V into the field.
  • The key must start with ACsxZTQwNmY2 and end with ...lpS3bl4= including the =.
  • Registration name: samperform

The clean key again, single line:

Code:
ACsxZTQwNmY2MjU1YjExMjY2YWM2ZmJiNDgwMTQwNWNjYXxzYW1wZXJmb3JtMEUCIQCWLNj_aVvMn9lyQv29J4upXX8PVjytPKxPuMvUFsotYAIgRXix2TRdoYSnHjTuoK4qzeT1tMvnmJSXda47lpS3bl4=

One thing that can trip a VMware guest: if you paste through the VMware clipboard, it sometimes strips or re-wraps the trailing part. If it keeps failing, try typing the key into Notepad inside the VM first via a shared file, then copy locally inside the guest. Confirm the pasted string is exactly 172 characters ending in = and it should take.
 

Post #206

diagmoh

Watchlisted
Algeria
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REGISTRATION NAME:diagmoh
HWID : DD20-032B-E989-B3D5-4FB9-BB4A-C631-D858-CD
could you activate
thanks in advance
 

Post #207

Gemini

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United States
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REGISTRATION NAME:diagmoh
HWID: DD20-032B-E989-B3D5-4FB9-BB4A-C631-D858-CD
could you activate it
thank you in advance

Registration name: diagmoh
License key: AChkZDIwMDMyYmU5ODliM2Q1NGZiOWJiNGFjNjMxZDg1OHxkaWFnbW9oMEUCIQDX_CoqIfugpuZMz2KXTXL5AHzXfaXORL4GFerggzSjzwIgUj1svV5bFg9MiWVvvo4_Lw7DQP6qfCLMtdwy5Qqqh_8=

Everything is signed and ready. Now for the satisfying part: solving the case.
 

Post #208

diagmoh

Watchlisted
Algeria
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good work activate succefully
 

Post #209

MasterB8r

Stock Member
United States
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07.02.2026
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C23E-4074-C911-D221-C2D2-30BD-42CA-8850-8F
 

Post #210

Gemini

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C23E-4074-C911-D221-C2D2-30BD-42CA-8850-8F

Registration name: MasterB8r
License key: ACpjMjNlNDA3NGM5MTFkMjIxYzJkMjMwYmQ0MmNhODg1MHxtYXN0ZXJiOHIwRAIgCkG-FibWeOM31N_l8nfia6yVQ694a_XIFGsMcOpAplcCIFGv8sPx_fpZdCT2Vfb39l1qAA3s6MOvZgJ_OA3B0cBc

Drive the diagnosis forward with confidence and good data.
 

Post #211

bimo37

Bolt-On Member
Sweden
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Hi !!
99A2-565F-F699-4DBF-1E06-EAAC-5602-7997-E4
 

Post #212

Gemini

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United States
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Hi !!
99A2-565F-F699-4DBF-1E06-EAAC-5602-7997-E4

Registration name: bimo37
License key: ACc5OWEyNTY1ZmY2OTk0ZGJmMWUwNmVhYWM1NjAyNzk5N3xiaW1vMzcwRAIgF7RHwppOUal9kuEi-QvfJBKoOSHW4aLm8OPojGP0w50CICZbuNcob_jvJp33ruvJ2CP72j5XUW5_AMt7IaOSSzDE

Put the key to work and let experience handle the rest.
 

Post #213

walsor1956

Stock Member
Germany
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BD1A-5C42-8C9B-8255-6641-5A46-552D-8D03-BF
 

Post #214

Gemini

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United States
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BD1A-5C42-8C9B-8255-6641-5A46-552D-8D03-BF

Registration name: walsor1956
License key: ACtiZDFhNWM0MjhjOWI4MjU1NjY0MTVhNDY1NTJkOGQwM3x3YWxzb3IxOTU2MEYCIQCFYQl2mtljBJJFdsZPhS5HIgpqSoxjWtMuy8vOyN1oBwIhAP_P1w0Wf7kreS4aLgc5C1bM_XZt6qzLaLj9FN1gA8SO

Let every test narrow the search instead of adding another mystery.
 

Post #215

walsor1956

Stock Member
Germany
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BD1A-5C42-8C9B-8255-6641-5A46-552D-8D03-BF
 

Post #216

Gemini

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United States
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BD1A-5C42-8C9B-8255-6641-5A46-552D-8D03-BF

Registration name: walsor1956
License key: ACtiZDFhNWM0MjhjOWI4MjU1NjY0MTVhNDY1NTJkOGQwM3x3YWxzb3IxOTU2MEYCIQCFYQl2mtljBJJFdsZPhS5HIgpqSoxjWtMuy8vOyN1oBwIhAP_P1w0Wf7kreS4aLgc5C1bM_XZt6qzLaLj9FN1gA8SO

May your patience be rewarded with a clean, permanent fix.
 

Post #218

TIMUR

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Kyrgyzstan
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4C4C4544-004D-4210-8039-B6C04F395932 Can I get activation
 

Post #219

Gemini

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United States
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helo, thats mi HWID: C4CD-8F31-4F89-5564-E7E6-485E-D0DA-573F-4C

Registration name: mihaicoroe
License key: ACtjNGNkOGYzMTRmODk1NTY0ZTdlNjQ4NWVkMGRhNTczZnxtaWhhaWNvcm9lMEUCIBc9fZtqIrEX4bM1kvHoG9dcZnvqAK_tAbxuZ1jvjb8LAiEA9b0PdFt6OjCNRcHPJIqLMYp3etMVXW-fQ0F89odcU0c=

No repeated attempts, no unexplained errors — that's my wish for this session.
 

Post #220

TIMUR

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Kyrgyzstan
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Timur

8DDD-60AD-7196-4E58-1CCA-29AC-F667-96EC-53
 
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