[Upgrading, Modifying and Unlocking] arnauddoeun:
Hello, I have a big with SP Flash Tool and my chinese phone M HORSE S80 :

ROM for M HORSE S80 (as known with Mpie N9700 name too, it's a generic phone) :

I a new user, so I can't post links but you can type in Google, M horse s80 rom, and go to needrom link

-In June 2016 (dates are important), I tried to flash my M HORSE S80 on my MacBook on Windows 7 32 Bit, it flashs ok the first time, I tried this a second time, but flash stops, and my phone won't power on . I tired several times, but I can't finish the flash, even if I format the NAND Flash.

-During few months, I keep the phone on shelve, and in January 2017, I retry this, with the same method, the same rom, etc ... and, it's strange but it's works the first time, when phones power on, there is a button for wipe cache partition and data partition, I click on this button and it's boots perfectly.

-This Sunday, I tired to flash the phone, but it's dosen't works. I will explain this :

+I tried differents OS and computers, Windows XP, 7, 10 on my Dell computer; 7 on my Mac, and it's dosen't works, I reinstalled clean Windows 7 10-15 times on my PC/Mac

+I can say something : When Preloader VCOM drivers was freshly install, SP Flash Tools recognize this driver as VCOM Drivers for 3-4 times, and after it changes automatically (only VCOM)

+Another thing : When SP Flash Tool is very speedy to flash the phone, phone is automatically disconnected and I have 4008 error (like in June 2016) . But When the program flash very slowly, flash goes to 100 percents, and say green tick. There is more chance to have a working phone in this situation.

+I know this is the good rom, because I flash this in January and it's works perfectly before

+I don't know if it this a hard brick or soft brick phone, because, When I try to power on with good battery, nothing happen in the screen, but when I connect to computer, phone is reconigzed .

+But when I put good battery and I turn on, Flashlight is activated for milliseconds. And when I tried to do another reflash, now flashlight is not activated, but phones vibrates for milliseconds.

+I tried to dissasemble the phone, to disconnect all cables ( screen, wifi, etc ...), and put another battery of another m horse phone, and it's dosen't work

+At the begin, when I flash for the second time, I can see the boot screen, phones tries to boot (I can see the animation and the boot sound for milliseconds, and there is a bootloop, and when I wait 10 minutes after, screen goes black)

+I tried to follow the instructions exactly, but it dosen't work (for example you need to press volume - button when it's flashing)

+I tried every combinaison for go in recovery mode, but there is no access to recovery mode (but there is a recovery mode when I go in mediatek update program, when I'm in Android)

+I tried new, old, etc ... of SP Flash Tool

+I tried differents USB cables

So, I don't know what SP Flash Tool and my phone do, i don't know why it's works in January and not in April or June, maybe i think that i need to wait few months for try to repair the phone, but I want to repair this phone, and I indicate all what I do, so help me please .

Thank you for reading.

PS : I'm French, so it's difficult to me for talking in English.