0xallie/checkm8_downgrade.md

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Guide for downgrading checkm8 devices

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checkm8_downgrade.md

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This guide has moved to Google Docs.

augumn commented Oct 16, 2023 •

edited

Guys, I've tried to downgrade from iOS 15.7.8 to 15.4.1 with shsh2 blobs using debian following those instructions but unfortunatelly something goes wrong even after I followed instructions - downgrade didn't even moved from 01% and after that it showed for me that Connection is timed out for the url https://coocoofroggy.me:443 and other urls too. After many trying, it doesn't even showing that message, it just stops saying Waiting for device to enter restore mode - Unable to place device into restore mode. iPhone 7 GSM used
I hope that this downgrade way is not dead for EOL device like this...

I just successfully did exactly this: downgrade 2 iPhones 7 (A10) and 2 iPadsAir2 (A8X) from 15.7.8 to 15.4.1. Instead of the GUI I used this most actual version of futurerestore. Nightly build version 306. Used on an ubuntu linux v.20.04.

Hi, @Haeckli. I almost have the same device with you which is an iPhone 7 Plus(A10) and on 15.7.8. I want downgrade it from 15.7.8 to 15.4.1, but I do not have SHSH blobs(15.0-15.4.1). So how can I deal with my device to get it downgraded. By the way, does your iPhone 7's touch id and passcode work well?

Haeckli commented Oct 16, 2023

Hi, @Haeckli. I almost have the same device with you which is an iPhone 7 Plus(A10) and on 15.7.8. I want downgrade it from 15.7.8 to 15.4.1, but I do not have SHSH blobs(15.0-15.4.1). So how can I deal with my device to get it downgraded. By the way, does your iPhone 7's touch id and passcode work well?

Hi @augumn,
first thing to say: everything (including touchID and passcode) works absolutely flawless after downgrading my iPhone 7.
The bad news is: NO blobs - NO downgrade. Sorry for you...

augumn commented Oct 17, 2023

Hi, @Haeckli. I almost have the same device with you which is an iPhone 7 Plus(A10) and on 15.7.8. I want downgrade it from 15.7.8 to 15.4.1, but I do not have SHSH blobs(15.0-15.4.1). So how can I deal with my device to get it downgraded. By the way, does your iPhone 7's touch id and passcode work well?

Hi @augumn, first thing to say: everything (including touchID and passcode) works absolutely flawless after downgrading my iPhone 7. The bad news is: NO blobs - NO downgrade. Sorry for you...

Thanks. Next I will try sunst0rm.

Haeckli commented Oct 17, 2023

Thanks. Next I will try sunst0rm.

Never looked at that ... Good luck

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