Upgrading custom Odoo code by hand is a crash loop: start the server, hit an error, fix it, restart, repeat. VersionBridge replaces that with one pass. Upload a module ZIP or import from GitHub, pick the source and target versions, and the engine checks your Python, XML and manifests against a continuously maintained knowledge base of what changed between those versions. Candidate findings are then loaded on a real Odoo instance of the target version, so what reaches your report is observed behaviour, not a prediction. Safe Python and XML fixes are generated automatically and re-verified the same way. The output is built for people who quote upgrades: a ranked list of breaking changes with file, line and fix effort, an effort and cost estimate at your own hourly rate, and a branded PDF assessment you can send to a client as the proposal. Supported paths include multi-version jumps (for example 16 → 20 or 17 → 20 as a single piece of work) and direct upgrades to Odoo 20. Scanning and the findings summary are free with no card; you pay only to unlock fixes and the full developer report, measured in upgrade lines (blank lines and comments never count). Code is processed in an isolated environment that is cleared after each run, is never used to train models, and can be deleted at any time.