1."NP 890" and "NP 980" are not common. 2. Then upgrade as follows: Step 1: Download "NP980 Search Learning Upgrade Package V 1.0.80.rar" and unzip it to the current folder. Step 2: Copy the "np980.upd" folder to the root directory of np machine. Step 3: Connect the charger, and then click the reset button behind np980 to enter the program upgrade interface. Step 4: Follow the upgrade steps and follow the screen prompts step by step until the upgrade is successful; Please note that during the program upgrade, it may take a long time to wait at the 0-5% stage. Remember not to press the reset button at this time, otherwise the system may be lost and the machine cannot be used. Step 5: NP machine can be reset until the upgrade prompt task is completed. Step 6: Copy the "Search Learning" folder to the "System Data" directory in the NP machine. Step 7: Finally, download the test package related to learning search function from the website, then copy it to SD card and insert it into NP machine. Remind again: 1. In order to ensure the safety of the upgrade, an external charger must be connected to prevent the battery from failing in the middle of the upgrade. 2. The test paper package can be directly copied to the SD card, or the corresponding folder directory can be established in the SD card (learning: test paper search, encyclopedia search, book search, sentence search). If you have any questions about the above operations, please call the company's after-sales service number: 0755-27652324 for consultation! ! It is recommended to go to the local after-sales service center for repair. I hope these are useful to you.