Amazon pushes forced updates that reinstall bloatware and block custom launchers. QCFire 73 contains a persistent ADB command ( pm disable-user --user 0 com.amazon.device.software.ota ) that actually holds. Newer tools block this command to avoid liability.
Ultimate Multi Tool (UMT) QcFire v7.3 is a Windows-based service utility used by technicians to flash, repair, and diagnose Qualcomm-powered Android devices. It is primarily a paid software ultimate multi tool qcfire 73 link
What are you seeing in the tool window?
It is crucial to download UMT QcFire from reputable sources to avoid malware. The software requires a physical or an NCK Pro box to operate. Amazon pushes forced updates that reinstall bloatware and