I bricked my HTC u11, need helps please!!

[sonVNCb]

i bought a HTC u11 with leeDroid 8.0 installed, CID HTCCN701, MID 2PZC40000.
then i followed this guide to change CID https://forum.xda-developers.com/u11/how-to/how-to-change-cid-s-sunshine-t3888170
after that it completly dead. It shows fastboot on my PC but i cannot flash anything except hosd_signed.img
No Download mode, no recovery.
fastboot flash show
Not allowed on PRODUCTION device
Tried RUU.exe but it no recognized my phone.

please help me and sorry for my bad english