Using a hex editor is generally safe as long as you know what you are doing. However, there is a potential risk of corrupting important files if you make incorrect changes. It is always recommended to work on copies of files rather than the original ones.
go to bing.com and type in Hex editor neo (neo is better) and it should be the first on in the list of links and download it. yes it is safe to download my computer said so
Nope
You are safe until you execute the file. Hex Editors will NOT execute the software, unless it offers a debug & compile option, if so - do not run them. If you fear a virus might attack during examination, run your editor inside a Sandbox or Virtual Machine.
Use Hex Editor.
Cnet.com has a program called "Batch Hex Editor", check it out. Hope that is what you are looking for. It is free to try
No
yes
Get a hex editor and set the value to maximum.
00273130
In the hex editor there are sixteen hex digits (0 to 9, A to F) and each one represents four bits. Two hex digits represent a byte, which can have a value from 00 to FF. This kind of notation is universally used in computing.
Cheat Engine is safe to download. It is an open source memory scanner/hex editor/debugger. It mainly is used for cheating in video games. The last stable release was released in May 2012.
You have to find a hex editor compatible with PSX roms.