Updating 10 3 9 to 10 4 internet explorer tools for validating xml and viewing xslt output
The new operating system, 10.5.x probably isn't supported on your machine.
If you want to update, it looks like you are going to have to get a new computer...
Once again, if you are trying to decide if you need to follow this guide, here is the general rule: If you’re on i OS 10.2.1 or higher, follow it. If you’re on lower than i OS 10.2 already, read my advice for your specific device and version.
Some devices have multiple models with different IPSWs.
For example, i Phone 5s has Global and GSM variants, and their IPSWs are not interchangeable.
In this guide, we’ll talk you through how to upgrade/downgrade to i OS 10.2 from a lower/higher firmware, if you are one of the people who should be there. Everyone else should check out my advice for all devices on all firmwares to find out if you need to stay where you are, or move to i OS 10.2.1) Ensure you have backed up your device to i Tunes and/or i Cloud before beginning.
Everyone on i OS 10.2.1 or i OS 10.3 beta who wants to jailbreak, now or in the future. I backup to i Tunes with ‘Encrypt Backup’ selected, to make sure I have a hard copy on my computer which also contains all my app passwords and email account details.