Hello.
Device should be detected as "Qualcomm..." device even if it has problems with eMMC. If device not detected as "Qualcomm...", the problem can be alse with CPU or PCB. Anyway, You can try make Repair boot via "eMMC". To repair You should have Medusa Pro Box (
Medusa PRO Upgrade Kit - GsmServer), old Medusa Box doesn't support work with eMMC.
If You have Medusa Pro Box, to repair this device do the next:
1. Instal the latest version of Medusa Pro Software (
Software, Drivers, Manual)
2. Download SRF (Smart Repair File) for this model via "Download *.srf" button in Software.
3. Select LG D855 from the Software list.
4. Press "Pinout" button and solder all the wires according to provided pinout.
5. Connect your device.
6. Press "Smart Repair" button.
7. Choose downloaded repair file.
8. Choose partitions which need to be repaired and press the Repair button.