[One (M8) Q&A, Help & Troubleshooting] Judiver:
Hi Redpoint,

Thank you for your reaction. Sorry for my slow reaction. I've been doing some reading and also finding out how to make a back-up without a connection. I ended up downloading HTC Sync Manager, which didn't want to connect my phone at first, and sometimes still doesn't. I am apparently not the only one who has this problem with HTC Sync Manager but I noticed that since my phone disconnected last week, that when I plug it to my pc with a USB cable (not an original HTC as that was not delivered with my 2nd hand phone...) I get the message that the driver doesn't install. I now sometimes I can connect my phone and sometimes not. This must be related to the problem with the phone, as formerly this never happened, I could always connect my phone to my pc with USB and never got a message about drivers not correctly having been installed. Also my phone powers off and on by itself now.

Off course I can learn ! I wouldn't have asked for help here if I didn't want to learn ! What I meant is that, opposed to computers, a normal user with an unrooted phone (like me) doesn't see nor can he/she access any software on a phone. When I had a problem with my previous phone (a Samsung), I asked for help on this forum but I didn't get any reaction. So I tried to figure things out myself and downloaded a file from the internet to (easily) root the phone. But the program appeared to be crap, it bricked my phone (I think my EMEI was stolen ?). That wouldn't happen on a pc, which is much more fool proof : you can see your system files, run malware and other scans, lots of security facilities are built in, lots ways to get back to a previous state from before messing up, etc. Everything I learnt about computers is done by reading & trying and I am much less afraid of doing something wrong because it is like walking in a city where I've been wandering around many times, seeing things that are either familiar or weird. With the experience of my Samsung in mind, I am afraid of doing something wrong with my HTC now, and especially afraid of downloading from websites that have not been recommended by a trustworthy source. That's all.

I just installed the Minimal ADB and Fastboot (https://xdaforums.com/showthread.php?p=42407269#post42407269) and got this result :

(bootloader) version: 0.5

(bootloader) version-bootloader: 3.19.0.0000

(bootloader) version-baseband: 1.29.214500021.12G

(bootloader) version-cpld: None

(bootloader) version-microp: None

(bootloader) version-main: 6.12.401.4

(bootloader) version-misc: PVT SHIP S-ON

(bootloader) serialno: *****

(bootloader) imei: *****

(bootloader) imei2: Not Support

(bootloader) meid: 00000000000000

(bootloader) product: m8_ul

(bootloader) platform: hTCBmsm8974

(bootloader) modelid: 0P6B10000

(bootloader) cidnum: HTC__001

(bootloader) battery-status: good

(bootloader) battery-voltage: 0mV

(bootloader) partition-layout: Generic

(bootloader) security: on

(bootloader) build-mode: SHIP

(bootloader) boot-mode: FASTBOOT

(bootloader) commitno-bootloader: 76df2b54

(bootloader) hbootpreupdate: 11

(bootloader) gencheckpt: 0

all: Done!

finished. total time: 0.080s

I bought it from Second-hand Phones in the UK in April last year.

Thanks for your help. I appreciate it.

Judith

Ps learned something already :)