Pocophone, stock rom version for upgrade process

I have, for a long time now, a Pocophone with /e/ based on oreo version.
I plan to upgrade to /e/ based on pie version.
Please let me know where I can find the stock rom “beryllium_global_images_9.6.27_20190627.0000.00_9.0_global” mentionned in the upgrade documentation.
Thanks a lot.

Regain your privacy! Adopt /e/ the unGoogled mobile OS and online servicesphone

Hi @xlbt