OnePlus 7 Pro I have a problem with T-Mobile sim unlock - OnePlus 7 Pro Questions & Answers

I have a oneplus 7 pro with android 9 that I tried to unlock with T-Mobile unlock tool but I get the error "Qualcomm Error:Lock operation failed because IMEI Validation failed" (Server error: error code=35) I would like to find the solution

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[Q] NCS showing error while downgrading 710!!

Hi i have a lumia 710 which is having HW rev2.1 and FW 12070 and DLOAD bootloader!!
When i try to downgrade using the firmware...it shows an error like dis
C:\ProgramData\Nokia\Packages\Products\RM-803\RM803_059N0T2_1600.3015.8107.12070_013.vpl has invalid signature.
at Nokia.Wezen.VariantPackage.DataPackage20.WezenVariantConfiguration.Initialize()
at Nokia.CareSuite.PlugIns.WezenRecovery.RecoveryDialog.RecoveryDialogModel.Flash()
at Nokia.CareSuite.PlugIns.WezenRecovery.RecoveryDialog.RecoveryDialogModel.<HandleDownloadVariantPackageCompleted>b__7(Object state)
and so didnt rename the product code(as it showed invalid signature) and it passed the stage....but later on another error showed up like dis..
ERROR: OSBL reported an error! Code: 0x40002
at Nokia.Wezen.Programming.SequenceLogic.BaseBb6Logic.VerifyResponse(Bb6Tlv response)
at Nokia.Wezen.Programming.SequenceLogic.ImageLoader.LoadImageFile(ImageBinaryData binaryData, ImageCertificate writeCertificate)
at Nokia.Wezen.Programming.SequenceLogic.ProgrammingLogic.ProgramImageFiles(EraseMethod eraseMethod)
at Nokia.Wezen.Programming.Programmer.Program()
at Nokia.Wezen.Product.Programming.FirmwareUpdate.WezenFirmwareUpdate.Recovery()
at Nokia.CareSuite.PlugIns.WezenRecovery.RecoveryDialog.RecoveryDialogModel.Flash()
at Nokia.CareSuite.PlugIns.WezenRecovery.RecoveryDialog.RecoveryDialogModel.<HandleDownloadVariantPackageCompleted>b__7(Object state)
so why am i getting dis....i use win7 64BIT...nobody else got this error as far as i know...could any1 help plz!!!
Got the same error! what to do?
and i am using Win7 32 bit..

Honor 6X stuck on "software update error, instillation package does not exist" and re

Honor 6X stuck on "software update error, instillation package does not exist" and re
Hi, I'm worried, phone is just bout month old. Shows this error. Not letting me go to recovery mode to reset the phone..please note that it was working fine earlier..isn't rooted or anything..

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I'm trying to root this device but face a lot of complications and the first being to unlock the device.
When I try to unlock from Mi Unlock Tool, it gives me an error and asks me to do it manually through Mi Unlock Status Option in Developer Options.
The Mi Unlock Status options still doesn't work for me because when I try to add account it shows me an error "Couldn't Add. Device basic data verification failed".

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