Home / Firmware / SM-L3550 / CHC
Galaxy Watch9
L3550ZCS1AZH4
CHCAndroid 17Released 8/21/2026Firmware details
Key identifiers and package metadata for this release.
L3550ZCS1AZH4L3550CHC1AZH4 ChinaChinaCSC code CHC13 carriers in 3 countries
CSC stands for Consumer Software Customization (sometimes "Country Sales Code"). Samsung firmware ships with carrier- and region-specific configs; the networks listed below are what this CSC was built to support out of the box.
China Broadnet46015NWIDNW02147China Mobile46000NWIDNW00109China Mobile46002NWIDNW00109China Mobile46007NWIDNW00109China Mobile46008NWIDNW00109China Telecom46003NWIDNW00041China Telecom46011NWIDNW00041China Unicom46001NWIDNW00042China Unicom46009NWIDNW00042
China UnicomMVNO45407NWIDNW01378China UnicomMVNO45407NWIDNW01910China UnicomMVNO45407NWIDNW01911CTExcelMVNO45431NWIDNW00368CTExcelMVNO45431NWIDNW02299
China Telecom45502NWIDNW01665China Telecom45502NWIDNW01933China Telecom45507NWIDNW01665