Mst2euvwp0891d Upd May 2026
The recommended installation workflow follows a “prepare-apply-validate” pattern:
Apply
mst2-update --apply /staging/updates/mst2euvwp0891d_upd.tar.xz.sig --mode delta
The update typically takes 12–18 minutes. A rolling reboot of the WP (workstation processor) occurs at the 70% mark, causing a 45-second loss of telemetry. The EUV source remains idle but does not lose vacuum. mst2euvwp0891d upd
Validate
After reboot, run the built-in verification suite:
mst2-diag --suite post-update --level full
Expected output: All tests PASSED (0891D active). Critical checks include scheduler latency histogram and source sync jitter. The update typically takes 12–18 minutes
Data aggregated from three 48-hour stress tests under identical production recipes (300 mm wafer, 13.5 nm EUV, 80 wafers/hour):
| Metric | Build 0889C | Build 0891D | Δ | |--------|-------------|-------------|----| | Avg. interlock response | 1.2 ms | 0.21 ms | -82.5% | | Max scheduler latency | 3.1 ms | 0.43 ms | -86.1% | | In-band power stability (σ) | 0.92% | 0.14% | -84.8% | | Droplet position error (RMS) | 2.08 µm | 0.39 µm | -81.3% | | Diagnostic data overhead | 8.4 MB/sec | 5.1 MB/sec | -39.3% (due to compression) | erase 0x9c000000 +0x400000 mst2>
Throughput impact: No statistically significant change in wafers per hour (p > 0.05). However, the reduction in transient faults lowered the reticle inspection rate by 34%, indirectly improving operational efficiency.
Ensures electrical safety for equipment operating within voltage limits of 50–1000 V AC.
For advanced users only. Connect via TTL to UART pins (baud 115200).
# Enter bootloader by sending 'Ctrl+C' during startup
mst2> loady 0x82000000
# Send .upd via YMODEM over serial
mst2> erase 0x9c000000 +0x400000
mst2> cp.b 0x82000000 0x9c000000 $filesize
mst2> upd apply