Updated my Android head unit - can't open iGo maps now - help a newbie

[jamesjames]

Forgive me as I'm pretty new to all of this and have been a little confused and hope I'm in the correct sub-forum. I honestly don't even know what version of iGo I have or how to tell if it's Primo. I didn't realize there were multiple versions.

I have a Joying JY-UL135N2 / JY-UM135N2 Android head unit in my vehicle. The unit came with iGo maps pre-installed on it and navigation was working perfectly. However, the unit was suffering from a Bluetooth cutting out issue so I updated the Android head unit last night with the newest update from Joying.

I copied the entire "iGo" folder to a thumb drive prior to the update. Here's the folder I copied:

Spoiler: too large pic 1

After I updated the head unit, I pasted the entire "iGo" folder back into the same folder on the Android. Then, I opened the "iGO_NF.apk" file and it seemed to install iGo.

However, now, when I attempt to use it, I get the following error message "missing or incomplete folder: /data/data/com.basarsoft.igo.javaclient/content/lang".

Spoiler: too large pic 2

Can somebody help me out here? Was there an extra file/folder I needed to copy other than the "iGo" folder? Can I fix that missing/incomplete folder somehow? Looking back at the original picture, I see there was a folder called ".here-maps" - am I screwed without that?