Before you execute a , understand the risks:
The query for usually points to a specific iteration of the extension that was widely circulated during the peak of Firefox’s extension ecosystem (pre-2017). This version is often sought after because it represents a stable release that included features for:
Tamper Data 11.0.1 is packaged as an .xpi (Cross-Platform Installer) file. The filename is typically: tamper_data-11.0.1-fx.xpi