Ipod gen 7 jailbreak

[Bernie Mitchell]

Hi all, I recently purchased a Ipod 7th gen which had ios 13.3 and now has 13.6 , I am having problems with it using too much battery when switched off, I'm thinking that I may need to reset it , but first I will need to unjailbreak it, my problem is I don't remember which jailbreak software I used and I can't find a shortcut or see anything relating to the type of jailbreak used , all I have is Cydia Free, is there a way that I can find out which jailbreak method I used . Thanks in advance , Ragsy