bitburner-src/markdown/bitburner.hacknet.upgradecore.md

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[Home](./index.md) &gt; [bitburner](./bitburner.md) &gt; [Hacknet](./bitburner.hacknet.md) &gt; [upgradeCore](./bitburner.hacknet.upgradecore.md)
## Hacknet.upgradeCore() method
Upgrade the core of a hacknet node.
**Signature:**
```typescript
upgradeCore(index: number, n: number): boolean;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| index | number | Index/Identifier of Hacknet Node. |
| n | number | Number of cores to purchase. Must be positive. Rounded to nearest integer. |
**Returns:**
boolean
True if the Hacknet Nodes cores are successfully purchased, false otherwise.
## Remarks
RAM cost: 0 GB
Tries to purchase n cores for the specified Hacknet Node.
Returns true if it successfully purchases n cores for the Hacknet Node or if it purchases some positive amount and the Node reaches its max number of cores.
Returns false otherwise.