Updating to newer Arduino IDE

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i have arduino ide 1.6.4 on windows 8 laptop computer , arduino ide 1.6.7 on windows 10 desktop computer. update both (or @ least one) newer arduino ide 1.8.0.  told others need download arduino ide 1.8.0 , automatically take care of older arduino ide presently have on computer. true? if not, please direct me step-by-step instructions on how update older ide newer one? have valued sketches on these older ides, should make copies before update? advice appreciated. thanks.

if use "windows installer" download link , previous installation used installer installing new version first uninstall last version. if use "windows zip file non admin install" there no installation process, unzip file , put unzipped folder anywhere , installed version still there until remove it.

quote from: bryab on jan 02, 2017, 11:53 pm
i have valued sketches on these older ides, should make copies before update?
if use installer files in arduino ide installation folder deleted. should never store of own files in folder. files in sketchbook folder , anywhere else left alone. of course it's idea irreplaceable files.


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