got the solution. pwedeng update ang gpp chip sa ibang working na iphone.
1. insert the gpp first on a working iphone
2. go to SIM Applications and update ICCID
3. after updating, insert the chip together with the sim sa iphone na iaactivate
Hope this helps! It worked for my iPhone 7plus
Sir, old gpp po gamit ko, naghhingi sya 7digits