Will transferring music with 'CopyTrans Manager' hurt my iPhone?

I see its an alternative to iTunes. I hate using iTunes. CopyTrans Manager apparently lets you copy past music and videos onto the iPhone… Is it safe though?

will my iPhone 5c identify it as a foreign intrusion and kill my iphone? Kinda like how it kills your iphone if you try to jailbreak it.

any advice?

Will changing the logic board on an iphone 5s take it out of recovery mode?

My iphone 5s is stuck in recovery mode / DFU. Only get an apple symbol when put on charge which keep flickering on and off.

When trying to restore via itunes i keep gettin code 4005 or 3014. Would replacing the logic board fix this? If so would i need to replace any other components at the same time?

any other suggestions?

Empty EVERY iPhone picture onto an iMac? Even older/previously downloaded pictures?

I currently have around 7,400 pictures on my iPhone 6. All of them are already in iCloud, so I can see them on Safari on my iMac, but I'm getting notifications that my storage is getting too full.
Some pictures are already downloaded to my Mac (some I've picked and chosen for various things) but most of those 7,400 are not downloaded to my computer.
As nice as it is to download individual pictures from iCloud, there isn't a "select all" button to download them all onto my iMac.
I've read things about opening Image Capture and clicking "select all" and downloading them, but when I've done that my computer only registers the most recent images since I last connected it to the computer, so all those pictures that have been on there for a while but were never downloaded, just don't show up as an option to download.
Surely there's a way to take EVERY image on my iPhone, whether previously downloaded or not, and download them to my computer so I can safely delete everything from my iPhone without worrying if I'm losing anything that I didn't save to my computer… SURELY there's a way, right?
Please help!
(If All else fails, I can always just hand-select 7,400 pictures from iCloud.com and download them to my computer. Haha. Yikes.)

Iphone is not connecting to certain apps via Wi-Fi?

My old iphone 4s ios8 would not connect to safari, skype, and the app store when using Wi-Fi, but other family members could. Now, my iphone 6s is having the same problem with skype and the app store but not safari. However, on both phones, using cellular data would allow me to connect. Does anyone have any ideas on how to fix?