[Nokia 6 Guides, News, & Discussion] SimGa:
Here is the logfile: (I am not on Windows 8, but Windows 10 , build 16299.192) Version 6.1.2 doesn't produce an error, it just takes forever.

I just realised it already says my phone is on version ND1-5200-0-00WW-B05(Oreo Stable) So what I tried to do is technically a downgrade then. I don't really mind which system version I get onto my phone as long as its running again ;) Propably it would not fail with a Oreo stable nb0 file. I already have a zipfile, but I don't know how to convert it into a nb0...

[10:24:25::963][10940]	[COMMENT]: OSTLA V6.1.2
[10:24:25::963][10940]	[COMMENT]: Microsoft Windows 8 (build 9200), 64-bit
[10:24:25::963][10940]	[COMMENT]:
[10:24:25::979][10940]	[COMMENT]:
[10:24:25::979][10940]	[COMMENT]: --------------------------------------------------
[10:24:25::979][10940]	[COMMENT]: Start update request.
[10:24:25::979][10940]	[COMMENT]: [DUMP TOOL ARGUMENTS] ===============
[10:24:25::979][10940]	[COMMENT]: ToolLevel = 98
[10:24:25::979][10940]	[COMMENT]: BungledImage = 0
[10:24:25::979][10940]	[COMMENT]: CollectData = 1
[10:24:25::979][10940]	[COMMENT]: EraseFlash = 0
[10:24:25::979][10940]	[COMMENT]: EraseUserData = 0
[10:24:25::979][10940]	[COMMENT]: FormatImage = 0
[10:24:25::979][10940]	[COMMENT]: EraseBoxData = 0
[10:24:25::979][10940]	[COMMENT]: SwitchCustomerSKUID = 0
[10:24:25::979][10940]	[COMMENT]: EraseFrp = 0
[10:24:25::979][10940]	[COMMENT]: LimitDowngrade = 0
[10:24:25::979][10940]	[COMMENT]: UFSProvision = 0
[10:24:25::995][10940]	[COMMENT]: UnlockScreenLock = 0
[10:24:25::995][10940]	[COMMENT]: CollectAprLog = 1
[10:24:25::995][10940]	[COMMENT]: UserPermissions = 0x0
[10:24:25::995][10940]	[COMMENT]: =====================================
[10:24:25::995][10940]	[COMMENT]: Image path: E:\Downloads\ND1-3700-0-00WW-B03.nb0_nokia5\ND1-3700-0-00WW-B03.nb0
[10:24:25::995][10940]	[COMMENT]: Platform: Q8, Device ID: USB 01
[10:24:25::995][10940]	[COMMENT]: Image Security Version: 0x1
[10:24:25::995][10940]	[COMMENT]: Switch device to fastboot mode...
[10:24:25::995][10940]	[COMMENT]: Polling USB device...
[10:24:25::995][10940]	[COMMENT]: Polling timeout: 10000 ms
[10:24:30::572][10940]	[COMMENT]: USB device mode: "Fastboot"
[10:24:30::572][10940]	[COMMENT]: DumpDeviceInformation:
[10:24:30::612][10940]	[COMMENT]: - Device USB 01 (USB\ROOT_HUB30\4&1B5B2857&0&0\2):
[10:24:30::632][10940]	[COMMENT]: = Interface: AdbWinUsb
[10:24:30::632][10940]	[COMMENT]: = Instance: \\?\usb#vid_2e04&pid_c009#5&471f9af&0&2#{f72fe0d4-cbcb-407d-8814-9ed673d0dd6b}
[10:24:30::632][10940]	[COMMENT]: = UsbId: vid_2e04&pid_c009
[10:24:30::636][10940]	[COMMENT]: = Description: Fastboot Device
[10:24:30::636][10940]	[COMMENT]: Current device mode is fastboot. Bypass switching step...
[10:24:30::636][10940]	[COMMENT]: Polling USB device...
[10:24:30::636][10940]	[COMMENT]: Polling timeout: 10000 ms
[10:24:31::165][10940]	[COMMENT]: USB device mode: "Fastboot"
[10:24:31::180][10940]	[COMMENT]: Loading image files...
[10:25:12::219][10940]	[COMMENT]: [UnzipPw Cmd] e "C:\LogData\OST\Data\D1C-0-3700-emmc_appsboot_service.zip" -o"C:\LogData\OST\Data" -y
[10:25:12::516][10940]	[COMMENT]: Unzip file name: D1C-0-3700-emmc_appsboot_service.mbn
[10:25:12::547][10940]	[COMMENT]: Unzip and create package item objects...
[10:25:12::547][10940]	[COMMENT]: Creating service bootloader package item object: D1C-0-3700-emmc_appsboot_service.zip
[10:25:12::547][10940]	[COMMENT]: [UnzipPw Cmd] e "C:\LogData\OST\Data\D1C-0-3700-emmc_appsboot_service.zip" -o"C:\LogData\OST\Data" -y
[10:25:12::798][10940]	[COMMENT]: Unzip file name: D1C-0-3700-emmc_appsboot_service.mbn
[10:25:12::798][10940]	[COMMENT]: Creating abootbak service bootloader package item object: D1C-0-3700-emmc_appsboot_service.zip
[10:25:12::798][10940]	[COMMENT]: [UnzipPw Cmd] e "C:\LogData\OST\Data\D1C-0-3700-emmc_appsboot_service.zip" -o"C:\LogData\OST\Data" -y
[10:25:13::063][10940]	[COMMENT]: Unzip file name: D1C-0-3700-emmc_appsboot_service.mbn
[10:25:13::063][10940]	[COMMENT]: FTM Image Path: C:\LogData\OST\Data\D1C-0-3700-ftm.img
[10:25:13::063][10940]	[COMMENT]: Creating commercial bootloader package item object: D1C-0-3700-emmc_appsboot.mbn
[10:25:13::063][10940]	[COMMENT]: Image INITOPTION: 0x20000
[10:25:13::063][10940]	[COMMENT]: Image INITDLTYPE: 0x60
[10:25:13::063][10940]	[COMMENT]: Dump Device Versions Info...
[10:25:13::063][10940]	[COMMENT]: Polling USB device...
[10:25:13::063][10940]	[COMMENT]: Polling timeout: 10000 ms
[10:25:13::761][10940]	[COMMENT]: USB device mode: "Fastboot"
[10:25:13::761][10940]	[COMMENT]: Checking device status...
[10:25:13::797][10940]	[FB]: [Send] getvar:version (timeout:3000ms)
[10:25:13::797][10940]	[FB]: [Recv] OKAY0.5
[10:25:13::797][10940]	[COMMENT]: Fastboot capability: 0x0
[10:25:13::797][10940]	[FB]: [Send] oem getversions (timeout:5000ms)
[10:25:13::812][10940]	[FB]: [Recv] INFOmodel=D1A
[10:25:13::812][10940]	[FB]: [Recv] INFOsub_model=none
[10:25:13::812][10940]	[FB]: [Recv] INFOsoftware version=ND1-5200-0-00WW-B05
[10:25:13::812][10940]	[FB]: [Recv] INFOSW model=00WW
[10:25:13::812][10940]	[FB]: [Recv] INFObuild number=B05
[10:25:13::812][10940]	[FB]: [Recv] INFOhardware version=5.0
[10:25:13::812][10940]	[FB]: [Recv] INFORF band id=
[10:25:13::812][10940]	[FB]: [Recv] INFOG_850_900_1800_1900^W_1_2_5_8^L_1_3_5_7_8_20_28_38_40
[10:25:13::812][10940]	[FB]: [Recv] INFOchip version=none
[10:25:13::812][10940]	[FB]: [Recv] INFOMCP info=none
[10:25:13::812][10940]	[FB]: [Recv] INFOEMMC version=Hynix 5.1 16GB
[10:25:13::828][10940]	[FB]: [Recv] OKAY
[10:25:13::828][10940]	[COMMENT]: OEM command response: model=D1A

sub_model=none

software version=ND1-5200-0-00WW-B05

SW model=00WW

build number=B05

hardware version=5.0

RF band id=

G_850_900_1800_1900^W_1_2_5_8^L_1_3_5_7_8_20_28_38_40

chip version=none

MCP info=none

EMMC version=Hynix 5.1 16GB

[10:25:13::828][10940]	[COMMENT]: Getting variable 'productid'...
[10:25:13::828][10940]	[FB]: [Send] getvar:productid
[10:25:13::828][10940]	[FB]: [Recv] OKAYD1AGAD1761631019
[10:25:13::828][10940]	[COMMENT]: Variable 'productid': D1AGAD1761631019
[10:25:13::843][10940]	[FB]: [Send] oem SecureBoot GetFuseStatus (timeout:0ms)
[10:25:13::843][10940]	[FB]: [Recv] INFOStatus=Enable
[10:25:13::843][10940]	[FB]: [Recv] OKAY
[10:25:13::843][10940]	[COMMENT]: fuse status = Enable
[10:25:13::843][10940]	[COMMENT]: Confirm checking sutinfo.
[10:25:13::843][10940]	[COMMENT]: Confirm checking sutinfo.
[10:25:13::843][10940]	[COMMENT]: Checking device status...
[10:25:13::890][10940]	[FB]: [Send] getvar:version (timeout:3000ms)
[10:25:13::890][10940]	[FB]: [Recv] OKAY0.5
[10:25:13::890][10940]	[COMMENT]: Fastboot capability: 0x0
[10:25:13::890][10940]	[COMMENT]: Checking device information...
[10:25:13::890][10940]	[COMMENT]: Getting variable 'sutinfo'...
[10:25:13::890][10940]	[FB]: [Send] getvar:sutinfo
[10:25:13::906][10940]	[FB]: [Recv] OKAY00000NOKAD1CX0431XXXXXXXX103D1C20400WW
[10:25:13::906][10940]	[COMMENT]: Variable 'sutinfo': 00000NOKAD1CX0431XXXXXXXX103D1C20400WW
[10:25:13::906][10940]	[COMMENT]: Old sutinfo: { "version": "", "channelID": "NOKA", "internalModel": "D1C", "region": "043", "gmsState": "1", "operatorID": "XXX", "project": "D1C", "imageID": "00WW", "androidVersion": "" "userDataVersion": "" }
[10:25:13::906][10940]	[COMMENT]: New sutinfo: { "version": "", "channelID": "NOKA", "internalModel": "D1C", "region": "043", "gmsState": "1", "operatorID": "XXX", "project": "D1C", "imageID": "00WW", "androidVersion": "" "userDataVersion": "" }
[10:25:13::906][10940]	[COMMENT]: Image security version: 0x0001
[10:25:13::906][10940]	[COMMENT]: Checking device status...
[10:25:13::953][10940]	[FB]: [Send] getvar:version (timeout:3000ms)
[10:25:13::953][10940]	[FB]: [Recv] OKAY0.5
[10:25:13::968][10940]	[COMMENT]: Fastboot capability: 0x0
[10:25:13::968][10940]	[COMMENT]: get bootloader type...
[10:25:13::968][10940]	[FB]: [Send] oem getBootloaderType (timeout:10000ms)
[10:25:13::968][10940]	[FB]: [Recv] OKAYcommercial
[10:25:13::968][10940]	[COMMENT]: Reflash service bootloader...
[10:25:13::968][10940]	[FB]: [Send] oem getSecurityVersion (timeout:0ms)
[10:25:13::984][10940]	[FB]: [Recv] INFOyes
[10:25:13::984][10940]	[FB]: [Recv] OKAY0004
[10:25:13::984][10940]	[COMMENT]: Device security version: 0x0004
[10:25:13::984][10940]	[FB]: [Send] oem getProjectCode (timeout:10000ms)
[10:25:13::984][10940]	[FB]: [Recv] OKAYND1
[10:25:13::984][10940]	[COMMENT]: project code = ND1
[10:25:13::984][10940]	[FB]: [Send] oem dm-veracity (timeout:0ms)
[10:25:14::000][10940]	[FB]: [Recv] OKAY848894c0873cb4469293fb61aa4f07730c5e6dfb

[10:25:14::000][10940]	[COMMENT]: device challenge UID = 848894c0873cb4469293fb61aa4f07730c5e6dfb

[10:25:14::000][10940]	[COMMENT]: Do authentication for bootloader flash permission...
[10:25:14::015][10940]	[COMMENT]: --------------------------------------------------
[10:25:14::015][10940]	[COMMENT]: START AUTHENTICATION
[10:25:14::015][10940]	[COMMENT]: Check digest length (UserInterAction.AcquireAuthentication)
[10:25:14::015][10940]	[COMMENT]: Check communication token length (UserInterAction.AcquireAuthentication)
[10:25:14::031][10940]	[ERROR DESCRIPTION]: Catch exception - Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt. bei UserForms.UserInterAction.AcquireAuthentication(String queryServiceType, String projectCode, String digestToSign, AuthRet& authRet)
bei Products.Product.UpdateSoftware(String sessionId, String deviceId, UInt32 userOptions)
bei Products.ProductQ8.StartUpdate(String sessionId, String imagePath, String deviceId, Int32 option)
bei Tasks.DispatchTask.DoWork_StartUpdate(Object sender, DoWorkEventArgs e) (DispatchTask.DoWork_StartUpdate)
[10:25:14::047][10940]	[COMMENT]:
[10:25:14::047][10940]	[COMMENT]: