@y6h66
I'm pleased for you that Garmin is replacing your 2595, however I hope you're aware that their firmware didn't brick it. In fact you could have 'un-bricked' it yourself very probably by simply loading V8.20 firmware [or even just the boot.bin of it] as an rgn file loaded via Updater.exe with no need for a cure.

I assume you used the kit in Post #1 for 24x5 with already modded 140.bin. This thread is quite old and in fact has a link in Post #1 referring back to the other newer thread which tells you how to modify region 140 yourself. The kit you used has an old boot component [ldr.bin], V6.30, and the latest fw for 24x5/25x5 is V8.20. What you did by using the old ldr.bin [boot.bin] was replace your unit's Boot BLK and X-Loader with version 6.30 while the System software [the firmware's fw_all.bin] in region 14 was still the latest 8.20. Probably this mismatch of components caused a problem and bricked the unit because the newer system software couldn't load.

Your question 'I wonder if I shouldn't do the firmware upgrade by SD card' raises the possibility that you haven't quite grasped what's happening here. The firmware [region 14] isn't being modified, it's the features already available in that firmware which are being enabled. That's done by modifying region 140. It also begs the question of how you did the modification to the bricked unit, i.e. if you used some other method being as this features upgrade is only done by a card.

If you still have the motivation to do this with the replacement unit please follow this: Clear NonVol on your nuvi or at least hard reset it, then use WebUpdater to load V8.20 if it's not already loaded. Then clear NV or hard reset again. It's very easy and best to make your own modded 140.bin following the instructions and using Roger's application from here: [Only registered and activated users can see links. ]. If you don't want to do that, then at least replace the older ldr.bin in the kit you previously downloaded with the one obtained from V8.20 attached here: [Only registered and activated users can see links. ]. Extract that file to the 1371 folder of the kit overwriting the existing ldr.bin file.