Edit (patch) a binary file in IDA Pro

Question

i would like to know how to edit a binary file in ida pro (i just need to change one instruction!)

(its ARM binary)

thanks

Answer 1

Possibly edit:

idagui.cfg: DISPLAY_PATCH_SUBMENU = YES

If the menu is not enabled, then use

Edit/Patch code/Change Byte

Answer 2

1. select the instruction you need to change in "IDA View" subview.

2. switch to "Hex View" subview. You will see several highlighting hex numbers.

3. press "F2", edit it, when you finish, press "F2" again.

4. That's all. you will see your change in other subviews.