Free, direct downloads of official stock firmware for the Samsung Galaxy M13 (model code SM-M135M) in the GTO region. Pick a build to update, repair, or unbrick your device with the Odin tool.
A CSC (Consumer Software Customization) code ties a Samsung firmware build to the country and carrier it was released for, controlling branding, available languages and which OTA updates a device receives. The GTO code is used in Guatemala by Unbranded, with one Samsung Galaxy M13 firmware version known so far.
Samsung Galaxy M13 GTO Firmware Archive
Official Samsung Galaxy M13 firmware for the Guatemala GTO region, including BL, AP, CP, CSC and HOME_CSC packages for Odin flashing.
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Samsung Galaxy M13 Combination & Special Files
Combination and service files for the Samsung Galaxy M13 (SM-M135M) — authorized repair, FRP reset after service, and diagnostics.
Device Mobile
Version
Bit - SW REV
FA
Change list
Updated
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GTO Firmware FAQ
Which carriers use the GTO CSC on the Samsung Galaxy M13?+
The GTO CSC is used by Unbranded in Guatemala. Flash the GTO firmware only if your device was sold through one of these carriers.
How many Samsung Galaxy M13 firmware versions are available for the GTO region?+
Currently one known Samsung Galaxy M13 firmware version is available for the GTO (Guatemala) region.
How is the GTO CSC different from other region codes?+
Samsung ties every firmware build to one of roughly 599 CSC (Consumer Software Customization) codes, each tied to a specific country and carrier. GTO is the code for Guatemala (Unbranded) — flashing a different CSC can change your carrier branding, available languages and which OTA updates you receive.
Samsung Galaxy M13 (SM-M135M) — GTO
GTO - Guatemala
Samsung Galaxy M13 GTO Firmware Archive
Samsung Galaxy M13 Combination & Special Files