GTS 6.0_r1 replaces GTS 5.1_r4 for approvals of GMS distribution devices running Android 6.0 (API level 23) through Android P (API level 28).
gts-6.0_r1-4868992.zip
GTS 6.0 User Guide.pdf
GTS 6.0 R1 New Test List.pdf
GTS 6.0 R1 Release Notes - Partners.pdf
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