We have Magento 126.96.36.199 and when you add an item with custom options to your cart, you cannot edit those options once it is in your cart. You have to delete that item and start over. Customers will not like that.
In version 1.5.x, you are allowed to click an edit button next to the items in your cart which will allow you to change any custom options or quantity without losing any data.
There are extensions out there like this one that will do what I want for only $79. [url removed, login to view] However, I would prefer it take you back to the product detail page to edit the product options rather than edit the options within the cart page itself.
But I can just purchase that extension unless you can add the edit functionality for less. They offer a money back guarantee...so your bid would need to be low enough and would need to be guaranteed to work. You must have good feedback and Magento experience.
Here is a FREE extension that does what the $79 extension does....but it is compatible with Magento 1.1. I don't know if it would work with version 188.8.131.52.
[url removed, login to view]