> Source: [sk178129](https://support.checkpoint.com/results/sk/sk178129)

# sk178129 - "NAND status: NOT OK" message for 1500 appliances

| Property | Value |
|----------|-------|
| Solution ID | sk178129 |
| Date Created | 2022-03-01 |
| Last Modified | 2022-07-12 |
| Technical Level | General |
| Products | Spark Firewall (Locally Managed) |
| Versions | R81.10.X |
| Platform | 1570R, 1500 |

## Symptoms

- `show diag` command shows this output in 1500 appliances:

```

==============================================
Flash statistics
==============================================
ERROR: Could not read NAND bad blocks list
NAND status: NOT OK
NAND bad-blocks:
+=========+=========+ stderr +=========+=========+
cat: can't open '/proc/nand_bad_blocks': No such file or directory
+=========+=========+=========+=========+=========+
```

## Cause

1500 devices do not use raw NAND, but eMMC.

## Solution

This problem was fixed. The fix is included starting from:

* [Check Point R80.20.35](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk174683&partition=Basic&product=Quantum "R80.20.35 for Quantum Spark Appliances")

Check Point recommends to always upgrade to the most [recent version](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=overview&product=512).

---

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