This post will helps you to fix oppo f1s A1601 not power-on only vibrate, Dead unbrick, unlock partten and sequrity, FRP google factory resert protection and unlock network for all country.
To solve this issue please download my firmware and wach my video to follow the steps and procedure.
Any Query please leave comment on comment box
BRAND: OPPO, MODEL: F1s A1601, CPU: MTK 6750,
(Whole Tutorial and material for f1s 32gb phone only)
Firmware Link: oppo a1601 mt6750 firmware