[OnePlus 8 Pro Questions & Answers] iredecent:
Hi everyone,

I have used guides posted on this forum for years now and it has helped me much in making my devices my own. First I wanted to thank everyone on this forum for the great content.

Now we get to my problem. Yesterday I tried to unroot my phone because I want to sell it. It is a European OP8Pro and I had rooted OOS global with magisk and custom recovery. I followed this guide here: https://www.thecustomdroid.com/oneplus-8-pro-oxygenos-restoration-guide/

In the Process there were a couple partitions that the tool was unabled to flash but it does not create any logs. I dont remember which ones it wasnt abled to do.

After the tool ran it rebooted my phone and the only thing I am abled to access is EDL or Qualcomm CrashDump Mode.

The next logical Step for me was using the MSMTool to flash everyting again which has worked for me in the past.

Now I haved tried alot of things to get this to work including different qualcomm drivers, different OOS Versions, different USB Ports, different USB Cables, disabeling SHA256 check, different PCs. Nothing worked for me. The MSMTool always fails with Firehose Communication Handshake Failed after 25s. It also seems that the phones disconnects during the process after downloading the Firehose Binary.

Now I am down the Rabbithole with Qualcomm QFIL and flashing the Firehose firmware but I dont know if I am right and the sources for that are quite dubious. I will include the MSMTool log maybe some OP Guru will guide me to the right way to fix this mess.

Thank in advance

Iredecent

[9944][05-18 09:15:06.121]<4> MetadataVersion=2,CryptVersion=1,[9944][05-18 09:15:06.121]<4> m_bIsPackImage=1

[9944][05-18 09:15:06.139]<4> Set Proc Mode 1

[9944][05-18 09:15:06.291]<4> ATO element doesn't exist. Skip.

[9944][05-18 09:15:06.299]<4> Project Name: 19811

[9944][05-18 09:15:06.300]<4> Factory ID:

[9944][05-18 09:15:06.300]<4> Image Version: instantnoodlep_15_E.34_210201

[9944][05-18 09:15:06.301]<4> Skip SHA256 Check: No

[9944][05-18 09:15:06.301]<4> HW CHK: No

[9944][05-18 09:15:06.302]<4> RF CHK: No

[9944][05-18 09:15:06.303]<4> PRJ CHK: No

[9944][05-18 09:15:06.303]<4> MDL CHK: Yes

[9944][05-18 09:15:06.304]<4> ATO build: No

[9944][05-18 09:15:06.305]<4> Load upd cfg failed. continue.

[9944][05-18 09:15:06.305]<4> config: 1

[9944][05-18 09:15:06.305]<4> Tool version verified! (V5.1.75)

[9944][05-18 09:15:06.305]<4> project 19811 not support boot mode feature

[9944][05-18 09:15:06.305]<4> project 19811 enable fuse

[9944][05-18 09:15:06.315]<4> [1] dwMajorVersion=6,dwMinorVersion=2,is_win7_system=0

[9944][05-18 09:15:06.329]<4> Skip multi-image identify: 0

[8356][05-18 09:15:10.982]<4> Device Remove: \\?\USB#VID_05C6&PID_9008#5&15f15702&0&4#{86e0d1e0-8089-11d0-9ce4-08003e301f73}

[8356][05-18 09:15:32.187]<4> Device Arrival: \\?\USB#VID_05C6&PID_9008#5&15f15702&0&4#{86e0d1e0-8089-11d0-9ce4-08003e301f73}

[10160][05-18 09:15:33.647]<4> [0] SetComStep: 1

[13920][05-18 09:15:33.648]<4> [1] SetComStep: 1

[6464][05-18 09:15:33.648]<4> [2] SetComStep: 1

[6464][05-18 09:15:33.648]<4> [2] GetComStep: 1

[6464][05-18 09:15:33.653]<4> CID = -1

[6464][05-18 09:15:33.653]<4> Non TMO group

[6464][05-18 09:15:33.660]<4> [3] Set device as UFS

[6464][05-18 09:15:33.893]<4> [3] [CSerialCommHelper] No data in buffer to be sent 0

[8356][05-18 09:15:43.404]<4> Device Remove: \\?\USB#VID_05C6&PID_9008#5&15f15702&0&4#{86e0d1e0-8089-11d0-9ce4-08003e301f73}

[6464][05-18 09:15:43.654]<4> [3] [SP][208] Reset Sahara

[8356][05-18 09:15:43.655]<4> Device Arrival: \\?\USB#VID_05C6&PID_9008#5&15f15702&0&4#{86e0d1e0-8089-11d0-9ce4-08003e301f73}