Good evening,
I rooted my BF's S5 when root first came out using towel root right from his phone, I never officially installed a custom ROM. He went ahead and updated to NG3 and is now having all sorts of problems connecting bluetooth etc. I wanted to "unroot" it, but found I could not because he lost root with his update. However, the problem is this. I cannot use odin, he has a mac. The only Windows PC I have access to myself is at work, and cannot be taking his phone to work with me when he needs to use the device (plus I don't think my boss will appreciate me using work computers for rooting/unrooting phones LOL). I have seen some information on xda for using "heimdall" on a mac, however it says not to use files that are "too big" but does not give a specific file size as to what exactly is "too big". Does anyone on here know if heimdall will work in this situation? I'm used to odin myself, and I don't want to brick his device just to fix B/T. It seems that safestrap is not installed either.... I also tried the whole VMWare but apparently you need a Windows disc to install the virtual machine... I don't have a windows disc. ..GRRR first & last time I root his phone LOL