Ok, so I'll try to make this short, this is how I fixed the logo bootloop.
I basically flashed a wrong firmware and the device was rendered unusable(stuck at logo).
First of all u need to use "Huawei Vodafone R215 – E5372 Flasher by fr3nsis" u can google it.
U need to find the right .hmf firmware to flash with fr3nsis.
The only one that I found and worked was "R215MobileWifiFirmware_v3.1"
it contains 13 files .bin and the flashable R215MobileWifiFirmware_v3.1.hmf.
You also need R215MobileWifiFirmware_v3.1.exe
After getting the files u need to put the device in download mode,
take the battery out and put it back, press and hold menu and power until some text appears(1 second),
right when the text appears press menu and it should get you into download mode.
Now u can use the the flasher tool to flash the firmware. after a few seconds, it should say "fail"
restart device and flash with R215MobileWifiFirmware_v3.1.exe. it should now work