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Firmware List:
# Model Version Region OS Size
1 SM-J400F J400FXXS9CVE2 TKD Q(Android 10) 2.5 GB Download
2 SM-J400F J400FXXU9CUJ3 TKD Q(Android 10) 2.5 GB Download
3 SM-J400F J400FXXU8CUF4 TKD Q(Android 10) 2.5 GB Download
4 SM-J400F J400FXXS6BTF8 TKD Pie(Android 9) 2.33 GB Download