My archos 70 internet tablet doesn't let me install 3rd party applications and also says some apps are not compatible with the device?

https://www.hardreset.info/devices/archos/archos-70-platinum/hardreset/first-method

Here's a pdf:
http://www.cleverhome.com.au/automation/ARCHOS-70-home-automation-tablet-touchscreen.pdf

Here's the online manual:
http://www.archos.com/manuals/A70_EN_v1.1.htm

You can connect you Archos to you computer by the USB cable which have came along with the tablet.
From tablet you need to choose mass storage device when you connect the cable. Once Mass storage activated you will see your tablet or SD card on your computer. You can copy paste or drag and drop songs from your computer folder to archos tablet Music or Media folder.
Or
You can use various Sync application from Android Market. Below given link is to list of applications available on Market. Please read description before you purchase or install any application.
https://market.android.com/search?q=itune&so=1&c=apps

first you will need to go to Settings > applications > and then checkmark unknown sources. Then you will have to go to your file manager (like astro) and click on the .apk. The android installer will run and install the app.

Hi, app Error 523 is a software hiccup usually caused by a 3rd-party application that is not compatible with the BlackBerry device OS.

Follow the below steps to get rid of this error message:
1. Take the battery out and put it back in after 30 seconds or so
2. While the device is rebooting (or while the hourglass is still spinning), plug it into the PC
3. Then open the application loader and remove the 3rd-party application that's causing the issue
4. Worst-case is when you need to wipe the device using JL_Cmder.

Hi, app Error 523 is a software hiccup usually caused by a 3rd-party application that is not compatible with the BlackBerry device OS.

Follow the below steps to get rid of this error message:
1. Take the battery out and put it back in after 30 seconds or so
2. While the device is rebooting (or while the hourglass is still spinning), plug it into the PC
3. Then open the application loader and remove the 3rd-party application that's causing the issue
4. Worst-case is when you need to wipe the device using JL_Cmder.

Hi, app Error 523 is a software hiccup usually caused by a 3rd-party application that is not compatible with the BlackBerry device OS.

Follow the below steps to get rid of this error message:
1. Take the battery out and put it back in after 30 seconds or so
2. While the device is rebooting (or while the hourglass is still spinning), plug it into the PC
3. Then open the application loader and remove the 3rd-party application that's causing the issue
4. Worst-case is when you need to wipe the device using JL_Cmder.

Just use the provided USB cable and connect the tablet to PC. Windows will recognize it as another drive (USB Mass Storage similar as USB HDDs and USB sticks). Copy the APK file anywhere (for example to Downloads folder. Then unplug from PC and run the Files application on Archos. Browse to the directory and clicking on the APK filewill start installation process.

Same here, come on archos at least post an aknowledgement on appslib! Day 4 of owning the device, don't let me down after choosing *you*.
Archos 101 user

App Error 523 is a software hiccup usually caused by a 3rd-party application that is not compatible with the BlackBerry device OS.

Follow the below steps to get rid of this error message:
1. Take the battery out and put it back in after 30 seconds or so
2. While the device is rebooting (or while the hourglass is still spinning), plug it into the PC
3. Then open the application loader and remove the 3rd-party application that's causing the issue
4. Worst-case is when you need to wipe the device using JL_Cmder. Follow the instructions here: How do I wipe the BlackBerry using Jl Cmder?