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[Bug]: "Model load failing: invalidSignature" after homebrew update and migration #58
Description
TUFF version
9.4.5
How did you install TUFF?
Release download or in-app update
Area
Updates and recovery, Settings
Mac, chip and memory
Mac17,3, Apple M5, 16 GB
macOS version
26.7.1
Model
Not model-specific
Steps to reproduce
- Followed TUFF Homebrew update readme to update from v. 9.4.3 to 9.4.5 (brew tap tuff-app/tap , brew trust tuff-app/tap/tuff , brew reinstall tuff , brew untap rexmhall09/tuff )
- Try to load any model
What you expected
Model loaded
What happened instead
error message "The model could not be loaded" and "Model load failing: invalidSignature"
Diagnostic summary (optional)
TUFF 9.4.5
macOS: 26.7.1
Mac: Mac17,3
Chip: Apple M5
Unified memory: 17179869184 bytes
Model: qwen3.6-35b-a3b
Context: 16384 tokens
Sampling: temperature 0.2, top-k 64, top-p 0.95
Expert cache: 16 slots (lfu)
Prefill: on, chunk 2048
Image residency: on-demand
Logs or crash report (optional)
Before submitting
- I removed credentials, private paths, personal prompts and chat content from this report.
Activity
[-][Bug]: Model load failing: invalidSignature[/-][+][Bug]: Model load failing: invalidSignature after homebrew update and migration[/+][-][Bug]: Model load failing: invalidSignature after homebrew update and migration[/-][+][Bug]: "Model load failing: invalidSignature" after homebrew update and migration[/+]arker2 commentedon Oct 23, 2026
Just downloaded a new model and it loads successfully. So the issue should be a signature problem on already downloaded models before the update/migration.
TUFF 9.4.6: load models whose previous engine no longer verifies (#58)
rexmhall09 commentedon Oct 23, 2026
Thanks @arker2, fixed in version 9.4.6
Sign release engines only with the release key