Default Can engine help whit a galaxy s2 sprint

OK so I have this galaxy s2 from sprint an I had flashed the stock that is for the d710 and tried it so many times and still would not get past the boot logo and when i get to recovery it says can't mount data invalid argument so I got a data.fs and flashed it but then stops and wont go can you help me it shows me how many times I had flashed and I flashed it like 25 times