This is the superior method for legacy devices.
You add the IPG Cydia repository ( https://invoxiplaygames.uk ) and install TubeFixer. Youtube Ipa For Ios 5.1.1
Google changed its search syntax. You need a TubeFixer version higher than 1.0.6. Alternatively, use the "Old YouTube Search" tweak from Cydia. This is the superior method for legacy devices
: Specialized Cydia repositories, such as those discussed on LegacyJailbreak , host the necessary files for these repairs. The Role of IPA Sideloading such as those discussed on LegacyJailbreak
to actually get legacy apps running on older iOS versions, or are you looking for more retro tech