if it is working edit the parts of the template to your current skin
This is not the issue; versions prior to 1.7 (note they said "versions below 1.7") used an older skin server which is no longer functional and the URL is hardcoded into the game so the only way to fix it would be to mod the game to use the new URL (and method of getting/parsing the data so you can't just redirect the URL request); if you want to change your skin you need to use a resource pack, which only needs to include assets\minecraft\textures\entity\steve.png:
In fact, back when the skin server still worked you could upload a 64x64 skin and it would work on older versions, just without the lower half (this is still the case for 1.7; in either case the skin in a resource pack does need to be 64x32 and the simplest way to edit it is to cut off the bottom half, perhaps moving it to the top half first, see the templates).
When i open minecraft in older versions below 1.7, my character uses steve skin, is there any way to fix that?
(sorry for my bad english im from argentina)
1.7 uses the old skin format - the skin has only one Layer (only the head has two layers)
Test it with this template:
https://minecraft.gamepedia.com/File:Skintemplate.png
if it is working edit the parts of the template to your current skin
This is not the issue; versions prior to 1.7 (note they said "versions below 1.7") used an older skin server which is no longer functional and the URL is hardcoded into the game so the only way to fix it would be to mod the game to use the new URL (and method of getting/parsing the data so you can't just redirect the URL request); if you want to change your skin you need to use a resource pack, which only needs to include assets\minecraft\textures\entity\steve.png:
WEB-985 skins.minecraft.net is responding with 404 for all skins
From the source code for 1.6.4:
Here is a link to a resource pack for 1.6 which replaces the default skin with my own (you can replace it with your own):
https://www.dropbox.com/s/gegkyhfvft86xrg/CustomSkin.zip?dl=0
For 1.5 and older versions you need to use a texture pack, which is a bit different:
https://minecraft.gamepedia.com/Tutorials/Custom_texture_packs
In fact, back when the skin server still worked you could upload a 64x64 skin and it would work on older versions, just without the lower half (this is still the case for 1.7; in either case the skin in a resource pack does need to be 64x32 and the simplest way to edit it is to cut off the bottom half, perhaps moving it to the top half first, see the templates).
TheMasterCaver's First World - possibly the most caved-out world in Minecraft history - includes world download.
TheMasterCaver's World - my own version of Minecraft largely based on my views of how the game should have evolved since 1.6.4.
Why do I still play in 1.6.4?
Thank you!