[tranceporter]

Hi,

I recently upgraded my friend's BMW from I-Level F056-21-03-570 to F056-23-07-540. Everything went smoothly, except post upgrade the gearbox is feeling jerky in gears 3 and 7. We did gearbox adaptation reset and it did not help much. In addition to that, we have clutch slippage in those gears and faults showing up. There is a chance that this is a hardware issue and the faults starting to appear post upgrade is just bad timing, but for the sake of completeness, I would like to do a full downgrade to the old I-Level. I already have ISTA+ 4.32.15 installed, but I am struggling to map the 21-03-570 I-Level version to the correct PSDZDATA full. All I can find online that ISTA v4.30.12 and above supports I-Level F056-21-03-570, but it does not make sense to just randomly take PSDZ version from Mar 2021 onwards and keep trying to downgrade. Any insight will be appreciated please.