I'm trying to install SUPEE-9767 but it failed with the following return :
patching file app/code/core/Mage/Admin/Model/Session.php Hunk #1 FAILED at 138. 1 out of 1 hunk FAILED -- saving rejects to file app/code/core/Mage/Admin/Model/Session.php.rej patching file app/code/core/Mage/Customer/Model/Session.php Hunk #1 FAILED at 222. Hunk #2 FAILED at 308. 2 out of 2 hunks FAILED -- saving rejects to file app/code/core/Mage/Customer/Model/Session.php.rej
I tried to replace those files with github one but it won't work either.
I also read about missing SUPEE-7405 but it was needed prior to Magento 188.8.131.52 (which is my release)
And I don't get debug message about saving rejects. Couldn't find these files...