Rom Stock OPPO OFP Unpack by EasyJTAG Plus
Rom Stock OPPO F11 CPH1913 Unpack by EasyJTAG Plus
Rom Stock OPPO F11 CPH1911 Unpack by EasyJTAG Plus
Link google drive: 
CPH1911EX_11_A.35_190708_9b7c972f 
Password
Link google drive: CPH1913EX_11_F.10_200628_d476e2a9 Password