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If your system is not that old, then you might need only this trick: Explanation:
In some cases minor API changes are made, but the new binary versions might not work with the current services. To obtain the old version of a subset of the programs, refer to the /run sub-tree (a few programs are loaded here to able to boot the system).

In some circumstances, upgrading the libc might break some application. A symptom is when a dynamically program exits with code 127. For example: The solution for this problem is to update the preloaded libc.so, by issuing the following (the -vvv is optional):