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Samsung Watch9 40mm (SM-L340) - Build L340ZCS1AZH4

Stock Firmware • Download • Android 17

Samsung SM-L340 — Firmware L340ZCS1AZH4

Device: Samsung Samsung Watch9 40mm

Model Code: SM-L340

Series: Galaxy L

Build Number: L340ZCS1AZH4

Region (CSC): CHC

Android Version: v17

Release Date: 2026-08-31 00:00

User Rating: ★★★★☆ 9.2/10

Downloads: 208

Important: This is an official Samsung Service ROM (4-file format). Use Odin to flash. Includes PIT partition. For repair/update purposes only.

Step-by-Step Flashing Instructions

  1. Preparation: Download this firmware file.
  2. Odin: Download Odin3 v3.14.4 or newer.
  3. Download Mode: Power off your Samsung Watch9 40mm. Hold Vol Up + Vol Down and connect USB.
  4. Load Files: Open the downloaded firmware. Select BL, AP, CP, CSC files in Odin.
  5. Flash: Click Start. Wait for "PASS!" message.