Sprd U2s Diag Reset Tool → [Free]

During factory calibration, the modem may stall on TX power level 15 (PCL). The reset tool clears the DSP’s instruction pipeline, allowing calibration to resume from the last known good step.

: Recovering "soft-bricked" tablets or modules stuck in diagnostic mode by flashing official stock firmware (.pac files) using the SPD Flash Tool (ResearchDownload or UpgradeDownload). Connection & Diagnostic Mode sprd u2s diag reset tool