Fixing LOGO! Soft Comfort V8.2 Installer Checksum and Version Mismatch

Siemens LOGO! Soft Comfort V8.2 is the engineering, simulation, and commissioning tool for the LOGO! 8.2 logic module family. Field engineers upgrading from V8.1.x frequently encounter download and installation anomalies: the installer splash screen reports "Hello, welcome to installer V8.1.1" on the 32-bit Linux package, the resulting binary identifies itself as V8.1.1 in the Info → About dialog, and the published SHA256 hash for the 32-bit setup.bin does not match the file served by the Siemens download portal. This reference documents the root cause, provides the correct verification procedure, and outlines the remediation steps required to obtain a genuine V8.2 build.

1. Product Identification and Catalog Reference

LOGO! Soft Comfort is delivered as a single-license installer for engineering the LOGO! 8 / LOGO! 8.2 (6ED1052-x) basic modules and the LOGO! 8.2 TDE text display. The product line and upgrade identifiers are catalogued in the Siemens product master and through authorized distributors:

The official Siemens product page — Siemens LOGO! Software — is the canonical source for the latest service pack and for the on-line Help catalog. The 109752712 delivery release describes what LSC V8.2 adds: an additional LOGO! Web Editor Software Tool for creating custom web pages for LOGO! 8.2 basic devices without HTML authoring, and tightened Ethernet communication with the LOGO! 8.2 BM and TDE.

2. Symptom Catalog

Field reports cluster into five reproducible symptoms. Capture the exact symptom before escalating — it determines the remediation path.

The presence of S1 + S2 + S3 together is the canonical signature of a stale or truncated 32-bit payload. Symptom S4 is the upstream cause: when the 64-bit download is smaller than advertised, the CDN is serving a previously-cached V8.1.1 build. Symptom S5 is independent of the version mismatch and applies to any LSC V8.x installer run on a stock Windows 10 image without SmartScreen trust for the Siemens certificate.

3. Root Cause Analysis

Three independent root causes converge to produce the symptom set:

1. Stale CDN cache for the 32-bit Linux build. The 32-bit setup.bin originally shipped on the Siemens automation sales-material CDN was superseded by a corrected binary, but a non-trivial fraction of HTTP requests continued to be served from the older object. The published SHA256 — 0F44B8E5E0A59C633342E1933023257D412C23A981F1BD70E40C1132100CF764 — corresponds to the corrected V8.2 binary; the older object returned a digest ending in ...392525, which matches the V8.1.1 build. Siemens has since acknowledged the digest mismatch in the German technical forum thread referenced in the field report (ID 183162, post 735004).
2. Truncated 64-bit download. A 132 MB 64-bit payload is consistent with the V8.1.1 64-bit archive. A genuine V8.2 64-bit installer is ~157 MB; the complete V8.2 SP1 package is ~1.3 GB. When the 64-bit download is undersized, the same staleness or partial-cache condition applies.
3. In-app upgrade path returns 8.1.1. Selecting Update LOGO! Soft Comfort from within an already-installed LSC V8.1.1 invokes a launcher that re-runs the cached 32-bit setup.bin. The in-app updater therefore propagates the same defect.

4. SHA256 Verification Procedure

Before executing setup.bin, compute the digest locally and compare to the value published on the Siemens download portal. This is the only deterministic check available in the field.

4.1 Linux / macOS

# Acquire the file
wget -O setup.bin "https://www.automation.siemens.com/salesmaterial-as/software/logo/upgrade/Linux/VM/linux32/setup.bin"

# Compute SHA256
sha256sum setup.bin

# Expected (V8.2 corrected build, 32-bit Linux):
# 0F44B8E5E0A59C633342E1933023257D412C23A981F1BD70E40C1132100CF764

If the printed digest differs — for example, an output terminating in ...392525 — the file on disk is the V8.1.1 binary. Discard the file, purge the browser / wget cache, and re-request with a cache-busting query string:

wget -O setup.bin "https://www.automation.siemens.com/salesmaterial-as/software/logo/upgrade/Linux/VM/linux32/setup.bin?v=$(date +%s)"

4.2 Windows

CertUtil -hashfile setup.bin SHA256

# Expected (V8.2 corrected build, 32-bit Linux):
# 0f44b8e5e0a59c633342e1933023257d412c23a981f1bd70e40c1132100cf764

PowerShell 5.1+ offers an equivalent:

Get-FileHash -Algorithm SHA256 .\setup.bin | Format-List

Cross-check that the resulting Hash field matches the value displayed on the Siemens download page. If the page and the local file disagree, do not run the installer — escalate to Siemens support with the digest, the request URL, and the date/time of the download.

5. Step-by-Step Resolution

The following procedure restores a genuine LSC V8.2 environment on a Windows or Linux host. It assumes a clean working directory and a fresh download.

1. Clean residual installations. Open Control Panel → Programs and Features and uninstall any prior Siemens LOGO! Soft Comfort entry. Delete the residual install tree at %ProgramFiles%\Siemens\LOGOComfort (Windows) or /opt/siemens/LOGOComfort (Linux). Stale files prevent the new installer from overwriting V8.1.1 components.
2. Clear browser and DNS caches. Cached CDN objects are the primary vector for the stale V8.1.1 build. Clear the browser cache, flush the local DNS resolver (ipconfig /flushdns on Windows, systemd-resolve --flush-caches on systemd-based Linux), and re-launch the browser in private/incognito mode.
3. Download from the canonical Siemens support entry. Navigate to the LOGO! 8.2 delivery release page — Delivery release LOGO! 8.2 (ID 109752712) — and follow the direct link to the V8.2 service pack. As of the V8.2 SP1 cut, the canonical full package is ~1.3 GB; an upgrade-only delta is ~157 MB. Either is acceptable provided the SHA256 verifies.
4. Verify the digest (Section 4). If the SHA256 of the 32-bit Linux payload equals 0F44B8E5E0A59C633342E1933023257D412C23A981F1BD70E40C1132100CF764, proceed. If it equals 2ba12640fdb461f8f7640b48faea2923edeea2806ae356bede0f8657cbbcd5e5 (the digest reported by an affected user) or any value terminating in ...392525, the binary is V8.1.1 and must be discarded.
5. Run the installer as administrator. On Windows, right-click setup.exe (or the extracted setup.bin wrapper) and choose Run as administrator. The UAC prompt is expected; approve it.
6. Confirm the splash banner reads "installer V8.2". A V8.1.1 splash is diagnostic of a stale or truncated payload regardless of file name.
7. Validate the post-install version. Launch LSC and open Help → Info (or the Help menu's About entry on localized builds). The version line must read V8.2.0 for the initial release or V8.2.1 for SP1. Anything else indicates that the V8.1.1 components were not fully overwritten.
8. Connect to a LOGO! 8.2 BM (optional verification). With a LOGO! 8.2 basic module on the local Ethernet subnet, use Tools → Ethernet → Connect. A successful online connection plus a firmware read of ES V1.82.x or later confirms end-to-end V8.2 compatibility.

6. Windows 10 SmartScreen Workaround

Windows 10 SmartScreen blocks the LSC V8.2 installer on hosts that do not yet have a trust record for the Siemens certificate. This is independent of the version mismatch and is encountered on every clean Windows 10 image.

1. In the SmartScreen warning dialog, click More info.
2. Confirm that the publisher field reads Siemens AG (or a Siemens-internal signer for the V8.2 build). If the publisher is blank or names an unrelated organization, abort — the binary does not come from Siemens.
3. Click Run anyway.

To suppress the prompt permanently within a controlled engineering environment, the installer binary can be added to the local AppLocker allow-list or distributed via Group Policy Software Installation. The certificate is published in the Siemens support portal as part of the signed-installer bundle; do not sign the binary with a third-party certificate.

7. LOGO! 8.2 Hardware Compatibility

LSC V8.2 is engineered against the LOGO! 8.2 BM firmware (ES ≥ V1.82.x) and the LOGO! TDE 8.2 text/graphic display. Per the delivery release (ID 109752712), key runtime features exposed by LSC V8.2 include:

• LOGO! Web Editor. A new tool bundled in LSC V8.2 for authoring custom web dashboards served by the LOGO! 8.2 BM's integrated web server. Projects target user-defined variable tags, eliminating the need to hand-author HTML.
• Enhanced Ethernet diagnostics. Extended online diagnostics for the LOGO! 8.2 Ethernet interface, including a S7-compatible variable view and per-port counters.
• TDE 8.2 message-page editor. Updated editor for the LOGO! TDE 8.2 with new bar-graph, curve, and bitmap widget primitives.

A program authored in LSC V8.1.x loads in LSC V8.2 without conversion. Down-conversion to a LSC V8.1.x project is not supported for programs that use the Web Editor variables or the TDE 8.2 widgets.

8. In-App Updater vs Standalone Installer

The in-app Update LOGO! Soft Comfort mechanism is convenient but inherits the CDN staleness problem described in Section 3. Where the in-app updater reports already on V8.2 but the About dialog still shows V8.1.1, the updater has confirmed the user's installed version against the same cached payload. In that condition, only the standalone installer from the support entry can deliver the corrected V8.2 binary.

9. Troubleshooting Matrix

10. Verification Checklist

• sha256sum setup.bin matches 0F44B8E5E0A59C633342E1933023257D412C23A981F1BD70E40C1132100CF764 (32-bit Linux) or the equivalent digest published for the 32-bit Windows / 64-bit Windows / 64-bit Linux payloads.
• Installer splash banner reads V8.2.
• About dialog reports V8.2.0 or V8.2.1 (SP1).
• An online connection to a LOGO! 8.2 BM succeeds and reads firmware ≥ ES V1.82.x.
• The LOGO! Web Editor entry is present under the Tools menu (new in V8.2).

11. Frequently Asked Questions