English to Spanish Law/Patents Law: Contract(s)

Letter Upgrade Obligations.
Section xx of the Agreement is hereby amended and restated as follows:
“(a) Company will use commercially reasonable efforts to provide Letter Upgrades to Devices in accordance with the following subsections (i) through (x); provided, however, that if Company successfully completes the “Category” requirements in any of these subsections, and meets all other applicable requirements (as set forth on Attachment A), Company will be eligible to receive the applicable payment in accordance with Attachment A:
(i) Category 1:
(A) For all premium and mass-premium smartphone Device Models (Manufacturer Suggested Retail Price of US$xxx and above) Launched during the calendar year of 2020, Company will provide at least one (1) Letter Upgrade.

No tengo el contrato original, solo esta enmienda, y no encuentro la traducción de "letter upgrade obligations"