What is the difference between these two modules? EC25EUXGA-128-SGNS and EC25EUXGR-128-SGNS

IoT Modules LTE Standard Module
1

i used EC25EUXGA-128-SGNS for a long time but when i got new version EC25EUXGR-128-SGNS i have some problem

2

Hi @Nasser ，
EC25EUXGA-128-SGNS has been EOL and the replacement product is EC25EUXGR-128-SGNS, so their firmware cannot be flashed to each other