first my English is very bad
Had the same problem with my BQ E5.
Use this Windows program (runs under Wine)
to create your IMEI files.
Type IMEI1 & IMEI2
Click On MP0B_001 it will generate the MP0B_001 file
Copy that MP0B_001 file in SD Card /Downloads
cp MP09_001 /android/data/nvram/md/NVRAM/NVD_IMEI/
that worked for me