img files are for particular radios, you need an original img file for YOUR particular radio. You start by downloading the img file from your radio and saving it so you have something to go back to if something fails.

csv files are just spreadsheet files - you can edit them with LibreOffice (don't use Excel as it's not compatible with CHIRP).

Is your friend's radio compatible with CHIRP?  Here's the supported radio list:
https://chirp.danplanet.com/projects/chirp/wiki/Supported_Radios

Here's info on using CHIRP:

Using CHIRP

73
David N1EA

On Tue, Jan 9, 2024 at 8:00 PM Bobby Creech <bobby.creech@gmail.com> wrote:
hi, I'm new to this handheld scene. Been using a CB but our group wants to switch to GMRS.
Anyway the "radio enthusiast" that is helping out by programming everyone's radio provided a csv file. However he's using RTSystems to program them so the columns don't match. I asked him about it, but he states he is unfamiliar with Chirp and doesn't know how to line them up (I sent him the column headers from the Chirp img file, but I think he ignored it. I would think it wouldn't be too hard for a radio guy to rearrange the columns.). He says I can bring the radio to the next meeting and he will program it. I thought about that, since then I could download it with Chirp and figure it out myself. But I don't really want to wait until the next meeting. Anyone could help me line up the columns if I provide the csv? (is it ok to share a radio csv?, I figure it's all just freqs that have labels added so the user knows what channel is what)

Thanks in advance
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