In case of the H2O you can't, since there you take the front off and then the touchscreen does not work it anymore, so you can't connect it to the PC to copy the Mod on it anymore. So you install the mod first and then take all the time you need in the black screen phase.
I'll add a warning to the first post, all right; but the know-how (how to open the device, how to handle it when its opened, how to replace the sd card without ripping the sd card slot off, how to not break the eink screen while doing all of the above) is expected to be provided by the user
