OnePlus8 VZW Bootloader is Not Unlockable

[rodken]

what i can do？i can fix signal loss question

Follow this guide regarding MSM Readback to backup your partition(s).

 

[clisays]

Follow this guide regarding MSM Readback to backup your partition(s).

for now.I'm in Verizon，my phone no problems，I just want fix when me flash hydrogen OS or international oxygen OS、Europe OOS signal failed question，I can try find whoareyou get me help，but her ，just interesting to unlock bootloader,her can't help me,i found XDA development ,no answer,but i get a guide,they tell me, MSM tool can backup img,i wanna try use MSM tool backup modem.img,use adb shell flash it,but,i don't konw how can do .

 

[rodken]

for now.I'm in Verizon，my phone no problems，I just want fix when me flash hydrogen OS or international oxygen OS、Europe OOS signal failed question，I can try find whoareyou get me help，but her ，just interesting to unlock bootloader,her can't help me,i found XDA development ,no answer,but i get a guide,they tell me, MSM tool can backup img,i wanna try use MSM tool backup modem.img,use adb shell flash it,but,i don't konw how can do .

You need to scour XDA and reach out to some folks that might assist you in that matter.

 

[Xryphon]

You need to scour XDA and reach out to some folks that might assist you in that matter.

Interestingly enough, I have the same issue when attempting to get cellular service on the global ROM. It seems that only the Verizon ROM has the capability of utilizing the modem - but somehow, custom ROMs can. It is just the global and European ROMs that cannot do so.

 

[rodken]

Interestingly enough, I have the same issue when attempting to get cellular service on the global ROM. It seems that only the Verizon ROM has the capability of utilizing the modem - but somehow, custom ROMs can. It is just the global and European ROMs that cannot do so.

Custom ROMs can
-- Not are all created equal.
-- Some ROMs lack the ability to send/receive MMS and some ROMs can't even initiate SMS or Calls.
-- European and Global versions need the necessary blobs pulled from an official OOS release.
-- You can refer to the short list of Android 12 ROMs that are suitable [according to others].