- The images algoexplorer.io displays is manually updated by the company behind algoexplorer.io when you verify the asset.
- You cannot change the decimals once the ASA is created. The only fields that can be changed are the 4 addresses (clawback, freeze, manager, reserve).
Note that if you want your asset to be later (in a short-term future) recognized by all platforms, it is highly recommended to follow ARC-3: ARCs/arc-0003.md at main · algorandfoundation/ARCs · GitHub