THANK YOU! It is working - I did what you suggested and yes - the driver was not there - now the zip file has sideloaded!
Is the next thing to do to go to recovery and install the sideloaded zip file? NOTE that my phone is not rooted - the TWRP is asking me if I want to root the phone - using the SU thing - do I need to do anything like that first - or just go ahead and confirm to flash the file - TWRP is saying "this operation may install incompatible software which may render your device unusable..."
**My phone is an ASIAN one - from Thailand actually - so does this matter at all at this point?**
If you could just let me know....thanks so much!
Sorry, but I didn't understand what you meant exactly, but TWRP asks to install SU, say No for now, (you can always install SuperSU later)
but where did this "this operation may install incompatible software which may render your device unusable..." come from??
you have an m7_u model, so "One_5.11.401.10_odexed.zip" should work fine.