Free, direct downloads of official stock firmware for the Samsung Galaxy A31 (model code SM-A315N) in the KOO region. Pick a build to update, repair, or unbrick your device with the Odin tool.
Samsung Galaxy A31 (SM-A315N) — KOO
Released 2020, April 27
185g, 8.6mm thickness
Android 10, up to Android 12, One UI 4.1
64GB/128GB storage, microSDXC, card slot
Samsung Galaxy A31 Released 2020, April 27 | 185g, 8.6mm thickness | Android 10, up to Android 12, One UI 4.1 | 64GB/128GB storage, microSDXC | Super AMOLED | 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 123˚, (ultrawide), 1/4.0", 1.12µm
5 MP (macro)
Auxiliary lens | Li-Po 5000 mAh
Samsung Galaxy A31 Network Specifications
Detailed Network specifications for the Samsung Galaxy A31:
Speed
HSPA, LTE
4G
1, 2, 3, 5, 7, 8, 20, 38, 40, 41 - SM-A315F
3G
HSDPA 850 / 900 / 1900 / 2100 - SM-A315F
2G
GSM 850 / 900 / 1800 / 1900
Technology
GSM / HSPA / LTE
Timeline
Released2020, April 27
Samsung Galaxy A31 body Specifications
Detailed body specifications for the Samsung Galaxy A31:
SIM
· Nano-SIM
· Nano-SIM + Nano-SIM
Weight
185 g (6.53 oz)
Dimensions
159.3 x 73.1 x 8.6 mm (6.27 x 2.88 x 0.34 in)
Samsung Galaxy A31 MISC Specifications
Detailed MISC specifications for the Samsung Galaxy A31:
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 KOO code is used in South Korea by KOO, with one Samsung Galaxy A31 firmware version known so far.
Samsung Galaxy A31 KOO Firmware Archive
Official Samsung Galaxy A31 firmware for the South Korea KOO region, including BL, AP, CP, CSC and HOME_CSC packages for Odin flashing.
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Samsung Galaxy A31 Combination & Special Files
Combination and service files for the Samsung Galaxy A31 (SM-A315N) — authorized repair, FRP reset after service, and diagnostics.
Device Mobile
Version
Bit - SW REV
FA
Change list
Updated
Status
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KOO Firmware FAQ
Which carriers use the KOO CSC on the Samsung Galaxy A31?+
The KOO CSC is used by KOO in South Korea. Flash the KOO firmware only if your device was sold through one of these carriers.
How many Samsung Galaxy A31 firmware versions are available for the KOO region?+
Currently one known Samsung Galaxy A31 firmware version is available for the KOO (South Korea) region.
How is the KOO 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. KOO is the code for South Korea (KOO) — flashing a different CSC can change your carrier branding, available languages and which OTA updates you receive.
Samsung Galaxy A31 (SM-A315N) — KOO
KOO - South Korea
Samsung Galaxy A31 KOO Firmware Archive
Samsung Galaxy A31 Combination & Special Files