@David-TP I buy it at offline store, can you help me update my deco E4R to new fimeware?

I have 3 deco version 1.0, one deco succes update firmware from 9.0.0 Build 20201127 Rel. 72837 to firmware 1.6.1_Build 20231227_Rel.53644. I try updating manually and OTA web or apps still doesn't...