How to recover data? Phone stuck on DFU mode
Hi all, not sure if anyone has done this before. Basically my iPhone 6 is no longer turning on and keeps going into "DFU" mode, and it seems like the only way to fix it is to reset/reboot it. Problem with that is that it will erase all the data and I haven't backed up in a few years. I see there are a few tools out there, notably 3utools, Tenorshare ReiBoot, and iMyFoneFixppo that apparently can "download the firmware" and install that on the phone without damaging/deleting the data.
Has anyone actually tried this and can comment on whether downloading the firmware would actually work without deleting the data?
I took the phone to one of those phone shops and they say there is no water damage, the battery is good, and everything is ok, it is just the "circuitry" is malfunctioning so that a reboot would fix it. But for me the data is more important than the phone, so if anyone has any experience with this I would love to hear it.
I was also told if these online tools don't work, then I should consider a "data recovery" service such as Payam. Anyone have experience with them? They charge $650 for the service, so not sure if I should go to that route. I am worried though that if I do use those online tools they may erase the data (even if they say they wont!) and so maybe I should go straight to Payam (or any equivalent data recovery service).
I also spoke to Apple and they said they can't do anything apart from help me restore my iPhone to my last backup.
Any other info or advice would be appreciated. Thank you.
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iPhone 6, iOS 12