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    Samsung Galaxy Watch9 40mm (SM-L345F) - GTO - L345FXXU1AZFL firmware

    Samsung Galaxy Watch9 40mm firmware L345FXXU1AZFL is the Android 17 build for the Samsung Galaxy Watch9 40mm (model SM-L345F), released by Samsung for Guatemala (GTO). It was built on 26 June 2026, carries the 2026-05-05 Android security patch, has changelist 33916510. The package combines system build L345FXXU1AZFL (AP/PDA) with CSC build L345FOWO1AZFL for the GTO region code. The download is 3.6 GB and has MD5 checksum 07cb1fde048d0060726d71284638f5aa, so you can verify the file after downloading. SamMobile added this file to the firmware archive on 26 June 2026.

    Country
    Model SM-L345F
    Product Code GTO
    Security Patch 2026-05-05
    OS Version Android 17
    PDA L345FXXU1AZFL
    CSC L345FOWO1AZFL
    Build Date 2026-06-26
    Changelist 33916510
    File size 3.6 GB (3,820,219,036 bytes)
    MD5 07cb1fde048d0060726d71284638f5aa
    Join to Download Fast download

    Other SM-L345F firmware for Guatemala (GTO)

    All SM-L345F firmware for GTO · All Samsung Galaxy Watch9 40mm (SM-L345F) firmware

    How to flash L345FXXU1AZFL on the Samsung Galaxy Watch9 40mm (SM-L345F)

    We recommend updating through Samsung's own tools: over-the-air (Settings › Software update) or Samsung Smart Switch on a PC. Flash the full firmware with Odin only when you are sure about the risks. A wrong region or a failed flash can brick the device, and SamMobile is not responsible for any damage.

    1. Download the firmware package above and extract the ZIP. It contains the AP (PDA), BL, CP and CSC files, plus a HOME_CSC file.
    2. Download and extract Odin on a Windows PC, and install the Samsung USB drivers if the PC does not detect the phone.
    3. Switch the device off and boot it into Download mode (usually Volume Up + Volume Down while connecting the USB cable, or Volume Down + Bixby + Power on older models).
    4. Open Odin. The ID:COM box turns blue when the device is connected.
    5. Load the files in their slots: BL, AP, CP and CSC. Use HOME_CSC to keep your apps and data, CSC to wipe the device.
    6. Leave Re-Partition unticked and click Start. The device reboots when Odin shows PASS. The first boot after a flash can take a few minutes.

    Step-by-step PDFs: 5-file firmware and 1-file firmware.

    What the build numbers mean

    PDA / AP (L345FXXU1AZFL) is the Android system build; its last three characters encode the year, month and revision. CSC (L345FOWO1AZFL) is the region and carrier configuration, and CP is the modem firmware. The product code GTO identifies the region or carrier this package was made for (Guatemala); our list of Samsung CSC codes maps every code to its country and carrier. Flashing a package for a different product code changes carrier features and can be refused by the bootloader, so pick the one that matches the CSC shown under Settings › About phone › Software information.