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Firmware List:
# Model Version Region OS Size
1 SM-T550 T550XXS1CTI7 XSA Nougat(Android 7.1.1) 1.64 GB Download
2 SM-T550 T550XXU1CQJ6 XSA Nougat(Android 7.1.1) 1.61 GB Download
3 SM-T550 T550XXU1BPK1 XSA Marshmallow(Android 6.0.1) 1.34 GB Download
4 SM-T550 T550XXU1BPE1 XSA Marshmallow(Android 6.0.1) 1.51 GB Download
5 SM-T550 T550XXU1AOJ1 XSA Lollipop(Android 5.0.2) 1.19 GB Download