Upgrade Programs

EVM

Example from Cyfrin

Solana

If the new program's size is greater than the current program's size, the program account's size has to be extended before the upgrade

CURRENT_PROGRAM_SIZE=`solana program show $PROGRAM_ADDRESS --output json | jq .dataLen`
NEW_PROGRAM_SIZE=`ls -la target/deploy/program.so | awk '{print $5}'`

DIFFERENCE=$((NEW_PROGRAM_SIZE - CURRENT_PROGRAM_SIZE))
solana program extend $PROGRAM_ADDRESS $DIFFERENCE
anchor upgrade --program-id $PROGRAM_ADDRESS 

Upgrade a program via Squads using buffer accounts

https://docs.squads.so/main/navigating-your-squad/developers-assets/programs#upgrade-a-program