: Contrary to concerns, unlocking does not degrade LTE performance; in some cases, users report improved throughput by bypassing carrier-imposed bandwidth limits.
If LTE bands are missing after flashing, re-apply the customize.bin from your original carrier, then edit the hw_default_ctree.xml to enable all bands. Verified XML configs are available on Github. huawei router b311221 unlock firmware verified
: Support for writing, sending, and receiving extra-long messages. : Contrary to concerns, unlocking does not degrade