##Problem Calibrating delay loop... message after some errors on the Aria G25 debug port. ##Solution The reason of is problem is well explained on [this post](http://lists.infradead.org/pipermail/linux-arm-kernel/2012-June/105428.html) and it can be caused intentionally typing

# hwclock -w

and removing the power supply before the command ends. The problem occours only if the RTC backup battery is present. To solve it you have to replace the AriaBoot executable file (boot.bin) on the first partition if the bootable microSD card with one of these files: * [Aria Boot 0.26 for Aria G25 with 128MByte of RAM](./ariaboot_026_128MB.bin) * [Aria Boot 0.26 for Aria G25 with 256MByte of RAM](./ariaboot_026_256MB.bin) Renaming one of it in **boot.bin**. The changes on AriaBoot source file are available on [GitHub](https://github.com/tanzilli/AriaBoot/commit/571922e978712a06fceed38575cdae3aecc1ddca).