Is there a way to convert .so using the new ELF ABI to the old

Question

I build a product on a recent Ubuntu version and pack an executable and a shared lib.

3.2.0-48-generic #74-Ubuntu SMP Thu Jun 6 19:43:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Distributor ID: Ubuntu
Description:    Ubuntu 12.04.2 LTS
Release:        12.04
Codename:       precise

My .so file return :

ELF 64-bit LSB shared object, x86-64, version 1 (GNU/Linux), dynamically linked, not stripped

When I unpack and try my product on an old debian (2.6.26-2-amd64 ... Now 2010 ... x86_64) I got the following error :

ELF file OS ABI Invalid

I picked the info file of a .so I found on that old debian and get:

 ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, stripped

Is there a tool to convert a binary from the new ABI version 1 (GNU/Linux) to the old SYSV ? Or which is the best options to be able to deliver product for both system (Debian 5 / Debian 12) ?